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Excel

Random Group Generator in Excel

One requirement that you will see as part of a classroom environment is the necessity to create groups. One option is to perform this process manually. This is OK if you have ten people.

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Data Tables in Excel tutorial

In my last Excel Tutorial, I covered using SUMIFS and SUMPRODUCT.

Data Tables is also an advanced topic in Microsoft Excel that falls under the category of What-If Analysis. What-If or Sensitivity Analysis is carried out to study the variation of the output to changes in the input variable.

Consider a case of compound interest, where you invest a certain amount of money in a bank deposit and the amount is compounded every year.

Formula for calculating compound interest:

A = P * (1 + r/n) ^ nt

Where:

  • P = principal amount (initial investment)
  • r = annual interest rate (as a decimal)
  • n = number of times the interest is compounded per year
  • t = number of years
  • A = amount after time t

Now, if suppose we want to see what the final amount will be at different interests rates, we can quickly use a data table for the same.

Read More »Data Tables in Excel tutorial

Excel Tutorial: SUMIF with Multiple Conditions

The title of the post is a bit of a misnomer because the SUMIF function in Excel does not allow you to have more than condition.

Excel 2007 introduced the SUMIFS function which allowed for multiple conditions. However, if you are using any version prior to Excel 2007 or if the persons who will be using your Excel workbook will be using a version prior to Excel 2007, then the SUMIF function will throw up an error.

That is a problem a colleague faced at work. To solve this problem you can use SUMPRODUCT along with double negation. The double negation is simply two minus signs one after an another. The net effect is that it doesn’t change the value of the calculations.

The reason we use the double negation is because, Excel does not always understand that TRUE=1 and FALSE=0 when you use SUM or SUMPRODUCT.

Read More »Excel Tutorial: SUMIF with Multiple Conditions

Software Saturday: Foxit Reader

Using Adobe Reader has been the traditional method of viewing PDFs, can’t blame them since they are after all the main folks behind the PDF revolution. However, one complain that everyone has had wrt Adobe Reader has been its massive load time. I will admit that the latest version, 8, does load extremely quickly.