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Evaluate Introductory Examples
Grade Level
Praxis Core
5165.282 Evaluate Introductory Examples
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A teacher is introducing z-scores. Which example best links the calculation to standardized distance from the mean?
A
Use a score of 84 from a distribution with mean 80 and standard deviation 2, so z = 2 means two standard deviations above the mean.
B
Use percentile ranks first and say a z-score is another name for a percentile.
C
Use a heavily skewed distribution and interpret z as a probability without context.
D
Give z = (x - mean)/standard deviation as a formula with no numerical situation.
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