Back to Compare center and spread of data sets — Problem 2 · Task Set 2
Exercises: Comparing Center and Spread of Data Sets
Work through each section in order. Report center and spread as matched pairs: mean travels with standard deviation (SD), median travels with the interquartile range (IQR). Choose the pair by the SHAPE of the data first: roughly symmetric uses mean/SD; skewed or outlier-laden uses median/IQR. A complete comparison of two or more sets states a center finding AND a spread finding. Round SD to two decimal places unless told otherwise.
Grade 9·21 problems·~35 min·Common Core Math - HS Statistics and Probability·group·hss-id-a-2
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Warm-Up: Mean, Median, and the Five-Number Summary
These problems review computations you already know from HSS.ID.A.1.
1.
For the ordered data set , what is the median?