The prevalence of bullying ____ through middle childhood and ____ in early adolescence, then ____ substantially by late adolescence

A population has µ = 50 and ? = 5. If 10 points are added to every score in the population, then what are the new values for the mean and standard deviation?

A) ?µ = 50 and ? = 5 B) ?µ = 50 and ? = 15 C) ?µ = 60 and ? = 5 D) ?µ = 60 and ? = 15

Evaluating the consistency of test scores over time is called __________

a. validity b. reliability c. test-retest reliability d. average distribution