1. Rank the values. Rank the values in the data set in order from smallest to largest. 2. Multiply k by n. Multiply k (percent) by n (total number of values in the data set). This is the

Step 4: Compute the position of the 40th percentile. To get the 40th percentile position in a data set with 11 data points, just multiply our percentile by the number of points in our data set: 0.