Describing the Distribution of a Quantitative Variable

AP Statistics· difficulty 3/5

A z-score of -1.5 means

A
$1.5 SD above the mean$
B
$1.5 SD below the mean$
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C
$Probability is 0.067$
D
$Mean is 1.5$

Explanation

z = (x - μ)/σ; negative means below the mean.

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