NORMINV Function The NORMINV function in Excel returns a number that is normally distributed around a mean, altered by a standard deviation and by a probability factor.

Percentages aren't always easy to calculate, but one of the best tools in Excel's toolbox is calculating percentages for you. Here's how to do it.

Variance is a measurement of the spread between numbers in a data set. The variance measures how far each number in the set is from the mean. You can use Microsoft Excel to calculate the variance ...

How to Calculate the Percent of Total Sales in Excel. Monitoring sales revenue allows you to track your business' profit, but equally important is understanding where those revenues are derived.