1. The height of a tree is a ______ variable, while the number of siblings is a ______ variable. a. Discrete, continuous b. Categorical, explanatory c. Continuous, discrete d. Continuous, categorical

2 . Calculate the standard deviation for the following set: 82, 93, 98, 89, 88 Find the IQR of the following data: 30, 32, 38, 41, 47, 49, 53, 54, 59, 68. What information does the IQR give us?

3. Calculate the range of the following data set, is the range a good representative value for this data set? Why/why not? a. 11, 14, 17, 13, 22, 19, 11, 18, 59