PARAMETRIC TESTS

Question 1

Z-TEST

Answer 1

used to compare a sample mean to a known population mean when the population standard deviation is known. The sample size must be large.

Question 2

ONE-GROUP T-TEST

Answer 2

compares the mean of a single sample to a predetermined value.

Question 3

PAIRED STUDENT T-TEST:

Answer 3

compares the means of two groups when each observation in one group can be paired with an observation in the other group.

Question 4

TWO-GROUP STUDENT T-TEST

Answer 4

compares the means of two independent groups. Used to investigate differences between two populations.

Question 5

ONE-WAY ANOVA

Answer 5

compares the means of three or more independent groups. Determines if there is a statistically significant difference between the group means.

Question 6

TWO-WAY ANOVA

Answer 6

analyzes the effects of two independent variables on a dependent variable. Used to see how the variables interact and influence the outcome.