In addition to the key words, you should also be able to Define each of the following terms:

Frequency distribution

Histogram

Polygon

Bar graph

Degrees of freedom, df

Line graph

Scatter plot

Pearson correlation

Spearman correlation

Regression equation

Slope constant

Y-intercept

Multiple-regression equation

Null hypothesis

Effect size

Cohen’s d

Percentage of variance accounted for (r2 or h2)

Ratio scale

Interval scale

Ordinal scale

Nominal scale

Chi-square test for independence

Independent-measures t-test

Repeated-measures t-test

Single-factor analysis of variance or one-way anova

Two-factor analysis of variance or two-way anova

Split-half reliability

Spearman–brown formula

Kuder–richardson formula 20, or k–r 20

Cronbach’s alpha

Cohen’s kappa