To Find the Mean, Total the Values in a Group

question 78

True/False

To find the mean, total the values in a group and multiply the sum by the number of values added.

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Definitions:

Two-tailed Test

A statistical test hypothesis where the area of interest is in both tails of the probability distribution, testing for the possibility of an effect in two directions.

One-tail Area

The probability in the tail of a distribution in a one-tailed test.

P-value

The chance of witnessing outcomes from a test that are as extreme or more extreme than what was actually seen, given the presupposition that the null hypothesis holds.

Confidence Interval

A set of numbers resulting from the statistical examination of a sample, expected to encompass the value of an undetermined parameter of the overall population.