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Math·Problem-Solving and Data Analysis·One-variable data: Distributions and measures of center and spread

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In each of the following data sets of $5$ values, $p$ is a constant. Which of these data sets has the largest standard deviation?

A

$p-4$, $p$, $p$, $p$, $p+4$

B

$p-1$, $p-1$, $p$, $p+1$, $p+1$

C

$p$, $p$, $p$, $p$, $p$

D

$p-5$, $p-4$, $p$, $p+4$, $p+5$