Which of the following is a preliminary election conducted within a political party to select candidates who will run for office?

Nonsystematic, within-groups variability

A) has differential effects on only the experimental group. B) has random effects. C) has no effects on the outcome. D) cannot be controlled.

When computing the standard deviation, what does it mean when the sum of the deviation

about the mean is NOT 0? a) The data set has a great amount of variability. b) The data set has at least one extreme score. c) The data is too small. d) The mean of the data set was computed incorrectly.