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.

A high dietary inflammatory index (DII), which quantifies the inflammatory potential of diet, is associated with increased prevalence of atopic dermatitis (AD).

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.