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Choose Measures of Center and Variation
Worksheet
Grade Level
Algebra I
ALG1.126 Choose Measures of Center and Variation
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Waiting times in minutes are 1, 1, 2, 2, 3, 3, 4, 12, and 14. Use the median-of-halves method for quartiles. Which statement is best?
A
Use median 3 and range 13 because range is the middle-half spread
B
Use mean 4.7 and IQR 13 because IQR is maximum minus minimum
C
Use median 3 and IQR 6.5 because the long right tail makes resistant measures better
D
Use mean 4.7 and standard deviation because the data are symmetric
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