Variance is a measure of how much the values in a distribution differ from the mean. It is calculated by finding the average squared deviations about the mean of the values in the distribution. Option A correctly defines variance.

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Variance Is

Question 12

Multiple Choice

Variance is:

A) the average squared deviations about the mean of a distribution of values.
B) an empirically testable statement that is an unproven supposition developed in order to explain certain phenomena.
C) a statement that asserts the status quo; that is, any change from what has been thought to be true is due to random sampling order.
D) a statement that is the opposite of the null hypothesis.
E) the error made by rejecting the null hypothesis when it is true.

Correct Answer: