Fourth quartile: The set of data points between the upper quartile and the maximum value of the data set. Calculating Quartiles In a Spreadsheet .

Derive your third quartile based on whether your data set includes an even or odd set of values. With an odd number of values, multiply N by 3, add 1 and divide the result by 4.

As data from McKinsey reveals, the top quartile of companies for ethnic diversity are 36% more likely to financially outperform their less diverse peers.

They found that the spread between top and bottom quartile funds in private equity is a whopping 12.9 percentage points compared to 1.5 percentage points for public equities funds.