I use this formative assessment for my Algebra students for them to show their understanding of descriptive statistics. It includes two versions of the test, and each test is 2 sides of a page each for a total of 4 pages.
This test assesses stem-and-leaf plots, range, mean, median, mode, IQR, quartiles, box-and-whisker plots, probability, the fundamental counting principle, problem-solving with the mean and median, and tree diagrams and conditional probability.
As always, I include spiral r