Question 21

A Z score of +/-1.96 is equivalent to these values on a normal distribution.

Critical region

+/-1 standard deviation

+/-2 standard deviations

+/-3 standard deviations

Question 22

ANOVA assumes which of the following?

Random sampling

Normal distribution

Dependent variable is at least interval

Three or more groups of independent variable

All of the above

Question 23

Relevant data that are expressed in numerical form are called:

Qualitative data

Quantitative data

Standard data

Multiplicative data

Question 24

Causation is synonymous with association.

True

False

Question 25

What is the minimum level of measurement appropriate for the independent variable in a t-test?

Nominal

Ordinal

Interval

Ratio