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Comparing Distributions by Center, Spread, and Shape
Grade Level
GRE
GRE.089 Comparing Distributions by Center, Spread, and Shape
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A shift of two interior observations changes 4, 6, 8, 10, 12 into 4, 4, 8, 12, 12. What happens to center and spread?
A
A has the larger mean because it has more distinct values.
B
B has the larger median but a smaller standard deviation.
C
The standard deviations are equal because both ranges are 8.
D
Both have mean and median 8, but B has greater standard deviation because values were moved away from the center without changing the sum.
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