Practice figuring out how the mean and median are affected when a data point is added to, taken from, or shifted within a data set. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video...

In this exercise, students practice reading histograms. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.

Practice finding the interquartile range (IQR) of a data set. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Calculate the standard deviation of a population. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Practice reading information presented in box plots. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Practice understanding the meaning of quartiles of data sets. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

A stem and leaf plot is a graphical representation for investigating variation. You will convert an ordered stem and leaf display grouped by tens into an ordered display grouped by fives.

Z-scores review, formulas and examples.