# Category: Formulas

## Percentiles

Percentiles are statistics which can help define where particular values sit in relation to the rest of the data set.   The formulas below show some examples based on the 20 values in column A: Cell C2 returns the value for P10 (the tenth percentile). Cell C3 returns the 25th percentile, which is also the Read More …

## Net Promoter Score

Net Promoter Score (NPS) is a popular method of measuring customer satisfaction when analysing feedback provided on a 1 to 10 scale.   An NPS result returns anything between 100 and -100 so it can be a useful mechanism for converting customer feedback scored on a 1-10 basis into a percentage, whilst at the same Read More …

## INDEX and MATCH functions

INDEX and MATCH are two of the most versatile functions within Excel.   We will look at these functions individually to begin with but the real value comes from combining the two of them. They can serve as a useful alternative to VLOOKUP because they can look up in either direction – VLOOKUP is restricted Read More …

## Using wildcards and searching specific text in Excel

When you want to search for some specific text rather than an exact match, you might be used to using wildcard characters in other programs. For example, the asterisk * is the wildcard in Microsoft Access and can be used alongside the Like operator. On a list of US states if you added criteria of Read More …

## Data cleansing functions

When you import data from an external source, you will often find it isn’t in a desirable format for you to analyse. You will need to clean your data up first and thankfully there are lots of in-built Excel functions which can help.     CLEAN can be used to remove non-printable characters you’ve imported. Read More …

## How to view your Excel formulas in a cell

A reader contacted me asking how I displayed formulas on the squaring numbers post (see image below) and it got me thinking about adding this short post. I was asked whether I typed in the text in columns D and E from each formula manually or whether there was a quicker way and the answer was I Read More …

## Formula to return the last value in a column

You may want to return the value from the last populated cell in a column for a number of reasons. Perhaps you have a dashboard which needs to return the ‘Current Champion’ but it needs to lookup against a dynamic list of champions so you can’t fix to one cell reference.   In this example we Read More …

## Squaring numbers in Excel

You can use the POWER function to square a number, or set it to the power of any given value. These examples show how you can square or cube a number.     If you wanted to find the square root of a number, use the SQRT function .   E.g. =SQRT(81) will return 9.

## Different count functions in Excel

COUNT returns the amount of cells in the range which contain a number. COUNTA (count all) returns the amount of cells containing any value. COUNTBLANK returns the amount of cells containing no value. COUNTIF returns the amount of cells in the range which meet your chosen criteria.