Back to Compare center and spread of data sets — Problem 1 · 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
Work through problems with immediate feedback
A
Fluency Practice
Compute each statistic. Keep mean with SD and median with IQR.
1.
Compute the standard deviation of (mean ). Use the population formula (divide the sum of squared deviations by ). Round to two decimal places.