Wednesday, 29 July 2015

1.1- Entering and editing data

Hello Excel-lent,

Let me first welcome you to this online Excel tutorial. My name is Oladapo Sorinola and I will be taking you through some of the sessions along side with some notable Excel gurus in the industry today; local and international. In today's session, we will be looking at "Entering and editing data", the most "basic' skill in excel. 

Now a days, any job requires basic Excel skills. These basic Excel skills are – familiarity with Excel ribbons & UI, ability to enter and format data, calculate totals & summaries thru formulas, highlight data that meets certain conditions, creating simple reports & charts, understanding the importance of keyboard shortcuts & productivity tricks. Based on my experience of training more than 5,000 students in various online & physical training programs, the following 6 areas form the core of basic Excel skills.



 GETTING STARTED

Excel is a massive application with 1000s of features and 100s of ribbon (menu) commands. It is very easy to get lost once you open Excel. So one of the basic survival skills is to understand how to navigate Excel and access the features you are looking for.
When you open Excel, this is how it looks.

this-is-how-excel-looks
There are 5 important areas in the screen.
1. Quick Access Toolbar: This is a place where all the important tools can be placed. 
When you start Excel for the very first time, it has only 3 icons (Save, Undo, Redo). But you can add any feature of Excel to to Quick Access Toolbar so that you can easily access it from anywhere (hence the name).
2. Ribbon: Ribbon is like an expanded menu. It depicts all the features of Excel in easy to understand form. Since Excel has 1000s of features, they are grouped in to several ribbons. The most important ribbons are – Home, Insert, Formulas, Page Layout & Data.
3. Formula Bar: This is where any calculations or formulas you write will appear. You will understand the relevance of it once you start building formulas.
4. Spreadsheet Grid: This is where all your numbers, data, charts & drawings will go. Each Excel file can contain several sheets. But the spreadsheet grid shows few rows & columns of active spreadsheet. To see more rows or columns you can use the scroll bars to the left or at bottom. If you want to access other sheets, just click on the sheet name (or use the shortcut CTRL+Page Up or CTRL+Page Down).
5. Status bar: This tells us what is going on with Excel at any time. You can tell if Excel is busy calculating a formula, creating a pivot report or recording a macro by just looking at the status bar. The status bar also shows quick summaries of selected cells (count, sum, average, minimum or maximum values). You can change this by right clicking on it and choosing which summaries to show.

Handling Data would be one of the main reasons why you are using Excel. Excel is quite intuitive and simple to use when it comes to typing data or handling it. Because of its grid nature, it can store & manage thousands of data points with ease.Built in features like copy, paste, find, highlight, go to, styles etc. make the process of maintaining data very easy for you.

GETTING STARTED WITH EXCEL – 10 MINUTE VIDEO TUTORIAL



Please watch it and let's get started.

You're awesome.

Oladapo Sorinola


Tuesday, 28 July 2015

The Excel Environment

Hello Excel-lent,

What is Excel?  

You use Word to create letters, flyers, books and mail merges. You use PowerPoint to create visual, audio and text presentations. You use Google to research a topic and find other information about things you need to know. You use Excel to make Calculations, Analyze Data and Create Charts. Although databases (such as Access) are the proper place to store data and create routine calculating queries, many people around the planet earth use Excel to complete these tasks. Excel’s row and column format and ready ability to store data and make calculations make it easy to use when compared to a database program. However, Excel’s essential beauty is that you can make calculations and analyze/manipulate data quickly and easily “on the fly!” This easy to use, planet-earth “default” program must be learned if you want to succeed in today’s working world. 

History of Excel

Microsoft Excel is a spreadsheet application developed by Microsoft for Microsoft WindowsMac OS X, and iOS. It features calculation, graphing tools, pivot tables, and a macro programming language called Visual Basic for Applications. It has been a very widely applied spreadsheet for these platforms, especially since version 5 in 1993, and it has replaced Lotus 1-2-3 as the industry standard for spreadsheets. Excel forms part of Microsoft Office.

Basic operation
Microsoft Excel has the basic features of all spreadsheets, using a grid of cells arranged in numbered rows and letter-named columns to organize data manipulations like arithmetic operations. It has a battery of supplied functions to answer statistical, engineering and financial needs. In addition, it can display data as line graphs, histograms and charts, and with a very limited three-dimensional graphical display. It allows sectioning of data to view its dependencies on various factors for different perspectives (using pivot tables and the scenario manager). It has a programming aspect, Visual Basic for Applications, allowing the user to employ a wide variety of numerical methods, for example, for solving differential equations of mathematical physics, and then reporting the results back to the spreadsheet. It also has a variety of interactive features allowing user interfaces that can completely hide the spreadsheet from the user, so the spreadsheet presents itself as a so-called application, or decision support system (DSS), via a custom-designed user interface, for example, a stock analyzer, or in general, as a design tool that asks the user questions and provides answers and reports. In a more elaborate realization, an Excel application can automatically poll external databases and measuring instruments using an update schedule, analyze the results, make a Word report or PowerPoint slide show, and e-mail these presentations on a regular basis to a list of participants.
Use of a user-defined function sq(x) in Microsoft Excel. The named variables x & y are identified in theName Manager. The function sq is introduced using the Visual Basic editor supplied with Excel.
Subroutine in Excel calculates the square of named column variable x read from the spreadsheet, and writes it into the named column variable y.
Graph made using Microsoft Excel
Microsoft allows for a number of optional command-line switches to control the manner in which Excel starts.

Macro programming

VBA programming

The Windows version of Excel supports programming through Microsoft's Visual Basic for Applications (VBA), which is a dialect of Visual Basic. Programming with VBA allows spreadsheet manipulation that is awkward or impossible with standard spreadsheet techniques. Programmers may write code directly using the Visual Basic Editor (VBE), which includes a window for writing code, debugging code, and code module organization environment. The user can implement numerical methods as well as automating tasks such as formatting or data organization in VBA and guide the calculation using any desired intermediate results reported back to the spreadsheet.
VBA was removed from Mac Excel 2008, as the developers did not believe that a timely release would allow porting the VBA engine natively to Mac OS X. VBA was restored in the next version, Mac Excel 2011.
A common and easy way to generate VBA code is by using the Macro Recorder.The Macro Recorder records actions of the user and generates VBA code in the form of a macro. These actions can then be repeated automatically by running the macro. The macros can also be linked to different trigger types like keyboard shortcuts, a command button or a graphic. The actions in the macro can be executed from these trigger types or from the generic toolbar options. The VBA code of the macro can also be edited in the VBE. Certain features such as loop functions and screen prompts by their own properties, and some graphical display items, cannot be recorded, but must be entered into the VBA module directly by the programmer. Advanced users can employ user prompts to create an interactive program, or react to events such as sheets being loaded or changed.
Users should be aware that using Macro Recorded code may not be compatible from one version of Excel to another. Some code that is used in Excel 2010 can not be used in Excel 2003. Making a Macro that changes the cell colors and making changes to other aspects of cells may not be backward compatible.
VBA code interacts with the spreadsheet through the Excel Object Model, a vocabulary identifying spreadsheet objects, and a set of supplied functions or methods that enable reading and writing to the spreadsheet and interaction with its users (for example, through custom toolbars or command bars and message boxes). User-created VBA execute these actions and operate like macros generated using the macro recorder, but are more flexible and efficient.

History

From its first version Excel supported end user programming of macros (automation of repetitive tasks) and user defined functions (extension of Excel's built-in function library). In early versions of Excel these programs were written in a macro language whose statements had formula syntax and resided in the cells of special purpose macro sheets (stored with file extension .XLM in Windows.) XLM was the default macro language for Excel through Excel 4.0. Beginning with version 5.0 Excel recorded macros in VBA by default but with version 5.0 XLM recording was still allowed as an option. After version 5.0 that option was discontinued. All versions of Excel, including Excel 2010 are capable of running an XLM macro, though Microsoft discourages their use.

Charts 

Excel supports charts, graphs, or histograms generated from specified groups of cells. The generated graphic component can either be embedded within the current sheet, or added as a separate object.
These displays are dynamically updated if the content of cells change. For example, suppose that the important design requirements are displayed visually; then, in response to a user's change in trial values for parameters, the curves describing the design change shape, and their points of intersection shift, assisting the selection of the best design.

Number of rows and columns

Versions of Excel up to 7.0 had a limitation in the size of their data sets of 16384 rows. Versions 8.0 through 11.0 could handle  65536 rows and 256 columns . Version 12.0 can handle 1,048,576 rows, and 16,384 columns.


Excel Version History

The table below lists the various versions of Excel for Windows that you may encounter.
VersionReleasedComments
11985Version 1, for the Macintosh was released.
21987The first Windows version was labeled "2" to correspond to the Mac version. This included a run-time version of Windows.
31990Included toolbars, drawing capabilities, outlining, add-in support, 3D charts, and many more new features.
41992The first "popular" version. Included lots of usability features.
51993A major upgrade. Included multi-sheet workbooks and support for VBA.
7*1995Known as Excel 95. The first major 32-bit version of Excel**. Feature-wise, it's very similar to Excel 5.
81997Known as Excel 97. A new interface for VBA developers, UserForms, data validation, and lots more.
91999Known as Excel 2000. Can use HTML as a native file format, "self-repair" capability, enhanced clipboard, pivot charts, modeless user forms.
102001Known as Excel 2002, this is part of Office XP. It has a long list of new features, but most of them will probably be of little value to the majority of users. Perhaps the most significant feature is the ability to recover your work when Excel crashes.
This version features product activation technology (i.e., copy protection). Please consider the ramifications of this before deciding whether to upgrade. 
Read John Walkenbach's Excel 2002 Review at PC World.
112003It's called Microsoft Office Excel 2003.
The new features in this version are: (a) improved support for XML, (b) a new "list range" feature, (c) Smart Tag enhancements, and (d) corrected statistical functions. Most users will not find the upgrade worthwhile.
122007Finally, some major changes in Excel. For some, the changes may actually be too major.
14 ***2010New features include sparkline graphics, pivot table slicers, an updated Solver, and a 64-bit version..
152013New features include a single-document interface, charting enhancements, and recommended charts and pivot tables.
* There is no Excel 6. Beginning with Excel 7, the version numbering was changed so all of the Microsoft Office applications would have the same version number.
** There was also 32-bit version of Excel 5, but it was not widely distributed.
*** There is no Version 13 of Microsoft Office
New Excel 2007 formats
FormatExtensionDescription
Excel Workbook.xlsxThe default Excel 2007 and later workbook format. In reality a ZIP compressed archive with a directory structure of XML text documents. Functions as the primary replacement for the former binary .xls format, although it does not support Excel macros for security reasons.
Excel Macro-enabled Workbook.xlsmAs Excel Workbook, but with macro support.
Excel Binary Workbook.xlsbAs Excel Macro-enabled Workbook, but storing information in binary form rather than XML documents for opening and saving documents more quickly and efficiently. Intended especially for very large documents with tens of thousands of rows, and/or several hundreds of columns.
Excel Macro-enabled Template.xltmA template document that forms a basis for actual workbooks, with macro support. The replacement for the old .xlt format.
Excel Add-in.xlamExcel add-in to add extra functionality and tools. Inherent macro support because of the file purpose.

Old file extensions

FormatExtensionDescription
Spreadsheet.xlsMain spreadsheet format which holds data in worksheets, charts, and macros
Add-in (VBA).xlaAdds custom functionality; written in VBA
Toolbar.xlbThe file extension where Microsoft Excel custom toolbar settings are stored.
Chart.xlcA chart created with data from a Microsoft Excel spreadsheet that only saves the chart. To save the chart and spreadsheet save as .XLS. XLC is not supported in Excel 2007 or in any newer versions of Excel.
Dialog.xldUsed in older versions of Excel.
Archive.xlkA backup of an Excel Spreadsheet
Add-in (DLL).xllAdds custom functionality; written in C++/C, Visual Basic, Fortran, etc. and compiled in to a special dynamic-link library
Macro.xlmA macro is created by the user or pre-installed with Excel.
Template.xltA pre-formatted spreadsheet created by the user or by Microsoft Excel.
Module.xlvA module is written in VBA (Visual Basic for Applications) for Microsoft Excel
Library.DLLCode written in VBA may access functions in a DLL, typically this is used to access the Windows API
Workspace.xlwArrangement of the windows of multiple Workbooks

Using other Windows applications

Windows applications such as Microsoft Access and Microsoft Word, as well as Excel can communicate with each other and use each other's capabilities. The most common areDynamic Data Exchange: although strongly deprecated by Microsoft, this is a common method to send data between applications running on Windows, with official MS publications referring to it as "the protocol from hell". As the name suggests, it allows applications to supply data to others for calculation and display. It is very common in financial markets, being used to connect to important financial data services such as Bloomberg and Reuters.
OLE Object Linking and Embedding: allows a Windows application to control another to enable it to format or calculate data. This may take on the form of "embedding" where an application uses another to handle a task that it is more suited to, for example a PowerPoint presentation may be embedded in an Excel spreadsheet or vice versa.

Using external data

Excel users can access external data sources via Microsoft Office features such as (for example) .odc connections built with the Office Data Connection file format. Excel files themselves may be updated using a Microsoft supplied ODBC driver.
Excel can accept data in real time through several programming interfaces, which allow it to communicate with many data sources such as Bloomberg and Reuters (through addins such as Power Plus Pro).
  • DDE : "Dynamic Data Exchange" uses the message passing mechanism in Windows to allow data to flow between Excel and other applications. Although it is easy for users to create such links, programming such links reliably is so difficult that Microsoft, the creators of the system, officially refer to it as "the protocol from hell". In spite of its many issues DDE remains the most common way for data to reach traders in financial markets.
  • Network DDE Extended the protocol to allow spreadsheets on different computers to exchange data. Starting with Windows Vista, Microsoft no longer supports the facility.
  • Real Time Data : RTD although in many ways technically superior to DDE, has been slow to gain acceptance, since it requires non-trivial programming skills, and when first released was neither adequately documented nor supported by the major data vendors.
Alternatively, Microsoft Query provides ODBC-based browsing within Microsoft Excel. Culled from Wikipedia, the free encyclopedia. 
"There is no application today that does not interface with Excel, at some point to import and the other for export" 
With this introduction of Excel, I invite you in to explore the unlimited capabilities of this wonderful application. Join in tomorrow for an excel-lent start as it's going to be an excel-lent week!

Be Excel-lent!
Oladapo Sorinola 
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Friday, 24 July 2015

How much Excel do you know?


Hello Excellent,

I am sure your week has been awesome. On my side, it has been a multiple Ctrl+S+H, where "S"= "Smile" and "H"="Happy". 

As you look forward to another weekend starting in few hours, let me quickly intimate you of our discussion lines starting from next week and we shall abide by this plan so we can all easily learn together from basic to the advance space without leaving any row or column untouched. 

How much Excel do you know? Are you a beginner, learner, basic, intermediate or advance user? Are you an Excel MVP or GM?  Join our discussion starting from next week Monday till the last row and column are filled up. Within this space, we shall be gist-ing on;  

1. The Excel Environment

  • Entering and editing data
  • Entering and editing text and values
  • Entering text and values
  • Editing cell contents
  • Using AutoFill to fill a series
  • Entering and editing formulas
  • Creating a basic formula
  • Entering cell references
  • Editing a formula
  • Working with the order of operations- "BODMAS"

2. Using Functions















Starting with



3. Advanced Formatting

  • Using special number formats
  • Using functions to format text
  • Working with styles
  • Working with themes
  • Other advanced formatting

4. Outlining and Subtotals

  • Outlining and consolidating data
  • Creating subtotals

5. Cell and range names

  • Creating and using names
  • Managing names

6. Tables

  • Sorting and filtering data
  • Advanced filtering
  • Working with tables
  • Using Lookup functions

7. Pivot Tables and Pivot Charts

  • Working with Pivot Tables
  • Rearranging Pivot Tables
  • Formatting Pivot Tables
  • Using Pivot Charts

8. Advanced Charting/ Dashboards

  • Chart formatting options
  • Combination charts
  • Graphical elements
  • Building intuitive dashboards

9. Documenting and Auditing

  • Auditing features
  • Comments in cells and workbooks
  • Protection
  • Workgroup collaboration
See you then....
Oladapo Sorinola 
BB pin 52E9802D
07014282477, 07062932708


Tuesday, 21 July 2015

Eight of the Worst Spreadsheet Blunders

Hello Excel-lent,

Following up on our last "Numerical Diarrhea" discussion, it is important that I share some publications with you, just to let you know how damaging a plus (+) or minus  (-) sign could be to your reports. As you read this, tens and hundreds of companies have suffered from this "Numerical Diarrhea" following wrong "simple" copy and paste errors made by employees, down to some "honest mistakes" in data manipulation. But for Fannie Mae, it resulted to a loss of $1.3Billion.

This publication is culled from http://www.cio.com/article/2438188/enterprise-software/eight-of-the-worst-spreadsheet-blunders.html

1. Fidelity's "Minus Sign Mistake"
Lesson learned: Be sure to differentiate your gains from your losses, and have another employee review the work. January 1995

"There was a big flap recently over Fidelity's Magellan fund estimating in November that they would make a $4.32/share distribution at the end of year, and then not doing so. A letter of explanation was sent to the shareholders...from J. Gary Burkhead, the President of Fidelity, including the following pertinent items: During the estimating process, a tax accountant is required to transcribe the net realized gain or loss from the fund's financial records (which were correct at all times) to a separate spreadsheet, where additional calculations are performed. The error occurred when the accountant omitted the minus sign on a net capital loss of $1.3 billion and incorrectly treated it as a net capital gain on this separate spreadsheet. This meant that the dividend estimate spreadsheet was off by $2.6 billion...

2. The $24 Million "Clerical Error" at TransAlta.
Lesson learned: Have another employee double-check the documentation. June 2003
A simple spreadsheet error cost a firm a whopping $24 million. The mistake led to TransAlta, a big Canadian power generator, buying more US power transmission hedging contracts in May at higher prices than it should have.
In a conference call, chief executive Steve Snyder said the snafu was "literally a cut-and-paste error in an Excel spreadsheet that we did not detect when we did our final sorting and ranking bids prior to submission," Reuters reports.
This looks like a career limiting move by the person who made the cock-up and the people who failed to spot it. Snyder said the company would "deal with the individuals in the appropriate fashion if there is anything found. At the end of the day it's a simple clerical error."
3. Fannie Mae Discovers $1.3 Billion "Honest" Mistake.
Lesson learned: When billions are at stake, it's best to have a financial peer review the documentation. October 2003
Fannie Mae, which finances home mortgages, stated in a news release of third-quarter financials that it had discovered a $1.136 billion error in total shareholder equity. Jayne Shontell, Fannie Mae senior vice president for investor relations, explained in a written statement, "There were honest mistakes made in a spreadsheet used in the implementation of a new accounting standard."
4. University of Toledo Loses $2.4 Million in Projected Revenue.
Lesson learned: Future-looking financial statements should have extra scrutiny and review. User training would also help prevent these formula-based errors. May 2004
Already facing significant state funding reductions for next year, UT officials have discovered an internal budgeting error that means they will have $2.4 million less to work with than anticipated. The mistake—a typo in a formula that led officials to overestimate projected revenue—was found Tuesday.... The budgeting error discovered this week was made in the institutional research office by an employee whom officials refused to identify. While official UT projections call for a 10 percent decline in graduate student enrollment, an increase mistakenly was shown in a spreadsheet formula that led officials to overestimate enrollment and therefore revenue, Mr. Decatur said.
[President Daniel] Johnson said no job action will be taken against the employee who made the mistake, who has a good performance record. Officials will, however, pursue systemic changes to provide more safeguards in the future.
"We have very competent people," Dr. Johnson said. "I do think that the continuing fiscal pressures on universities have forced us to a level of staff support where there is little or no redundance in the process."
5. RedEnvelope Skids on Loss Forecast and Budgeting Error.
Lesson learned: Quality control is king, especially when reporting to The Street. March 2005.
Shares of RedEnvelope Inc. lost more than a quarter of their value Tuesday after the company warned of a fourth-quarter loss due to weak Valentine's Day sales and a budgeting error that resulted in an overestimation of gross margins. [The company] said its chief financial officer, Eric Wong, had resigned.
"While the concurrent preannouncement and Wong's departure may suggest management believes Wong's replacement remedies the situation, we are not yet convinced the weaknesses are solely related to Wong," analyst Rebecca Jones Kujawa wrote in a research note.
News outlets reported that RedEnvelope spokeswoman Jordan Goldstein said the budgeting error was simply due to a number misrecorded in one cell of a spreadsheet that then threw off the cost forecast and was unrelated to the CFO change.
6. "Think-and-Do Tank" Flubs the Math.
Lesson learned: Have another employee double-check the work. May 2005
The Center for Regional Strategies recently confirmed that a researcher's errant cut-and-paste from a spreadsheet caused one measure of the region's level of educational attainment to appear a lot worse than it is. Specifically, in a study released in March by the Center for Regional Strategies, a self-described "think-and-do tank" housed at Virginia Tech, the center reported that a dismal 11 percent of the region's population older than 25 had bachelor's degrees or higher. That number should have been 20 percent.
"It was just a simple cut-and-paste error," said Stuart Mease, a spokesman for the Center for Regional Strategies. "I don't know how it happened, but it did. We apologize for our mistake and want to correct it."
7. Kodak Restates, Adds $9 million to Loss.
Lesson learned: Lack of data-quality controls can have a negative outcome. November 2005.
Robert Brust, Kodak's chief financial officer, said that the severance-related error stemmed from miscalculating severance pay accrued by just one employee, revealing what he called "an internal control deficiency that constitutes a material weakness that impacted the accounting for restructurings." Brust said the company expects to fix the problem by year-end.
Kodak spokesman Gerard Meuchner said the hefty $11 million severance error was traced to a faulty spreadsheet. "There were too many zeros added to the employee's accrued severance. But it was an accrual. There was never a payment," he said.
8. Westpac Jumps the Gun on Profit.
Lesson learned: You can never get enough spreadsheet and data-handling training. November 2005.
Westpac was forced to halt trading on its shares and deliver its annual profit briefing a day early after it accidentally sent its results by email to research analysts. Details of the $2.818 billion record profit result for the 12 months to September 30...were embedded in a template of last year's results and were accessible with minor manipulation of the spreadsheet. (Some news reports indicated an employee had thought that a black cell background fill would hide black text.)
Westpac CFO Philip Chronican said, "It is not just one error, it is a compounding of two or three errors.... We will obviously be conducting a full inquiry to make sure it doesn't happen again."
If you're sweating after reading this, first, take a deep breath, and second, initiate a conversation with your boss about what controls are in place to make sure these kinds of events don't happen to your company, then ask for a training.
Remain Excel-lent.
Oladapo Sorinola 
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07014282477, 07062932708