Introducing Statistics: Why Be Normal
AP Statistics · Flashcards · Recall
AP STATISTICS · FLASHCARDS
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QUESTION
What does the area under a normal distribution curve represent?
QUESTION
What is a z-score?
QUESTION
What is the function used to standardize a normal variable?
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ANSWER
z
=
x
−
μ
σ
z = \frac{x - \text{μ}}{\text{σ}}
z
=
σ
x
−
μ
. Z-score formula converts any normal variable to standard normal.
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