When data is presented as a list of numbers, it can be difficult to interpret. Box plots summarises the data set using 5 key values. minimum maximum median lower quartile upper quartile ...

The plot on the right is a box and whisker plot, created from the very same set of CPCs that we used in part one. Hooray for continuity! First, let’s ground ourselves in some basics.

Huynh Huynh, Leonard S. Feldt, Estimation of the Box Correction for Degrees of Freedom from Sample Data in Randomized Block and Split-Plot Designs, Journal of Educational Statistics, Vol. 1, No. 1 ...