Examlex
Which of the following teens is most likely to engage in risky sexual behavior?
Mean
The average of a set of numbers, calculated by dividing the sum of all values by the count of values, and used as a measure of central tendency.
Z-statistic
A type of standard score that represents the distance in standard deviations a data point is from the mean, used in significance testing.
Two-tailed Test
A statistical test that considers both directions of a possible effect, testing for the possibility of an effect in two opposite directions.
Z-test
A statistical test used to determine whether two population means are different when the variances are known and the sample size is large.
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