A Correlation Tells Us

question 69

Multiple Choice

A correlation tells us:

• A)whether a cause-effect relationship exists.
• B)whether two variables are related
• C)whether or not a test is efficient.
• D)if people are responding to demand characteristics.

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Definitions:

Percentile

A measure indicating the value below which a given percentage of observations in a group falls.

Biochemistry Test

A laboratory examination to analyze chemical reactions, substances, and functions in living organisms.

Z-score

A statistical measurement of a score's relationship to the mean in a group of scores, often used to calculate probabilities in a normal distribution.

Tchebysheff's Theorem

A theorem that provides a bound on the probability that the value of a random variable lies within a certain number of standard deviations of the mean.