Statistics and Regression Quiz

What type of test compares an individual's score to others in a norm group?

• Inferential Tests

• Norm-Referenced Tests

• Criterion-Referenced Tests

• Descriptive Tests

Which correlation indicates that both variables move in the same direction?

• No correlation

• Biserial correlation

• Negative correlation

• Positive correlation

What does regression use to predict scores on one variable from another?

• Median

• Mean

• Correlation

• Standard deviation

What is the range of the Pearson correlation coefficient?

• 0 to 1

• -1 to 1

• 0 to 100

• -1 to 0

Which correlation is used for ranked data?

• Tetrachoric Correlation

• Phi Coefficient

• Spearman's Rho

• Point Biserial Correlation

What does the coefficient of determination (r²) represent?

• The proportion of variation explained

• The strength of a relationship

• The total number of variables

• The average of a dataset

What is the coefficient of alienation?

• 1 - r²

• r²

• r + 1

• r

What does shrinkage refer to in regression analysis?

• Decrease in prediction accuracy

• Stability of regression coefficients

• Increase in prediction accuracy

• Sample size increase

What is the purpose of cross-validation?

• To determine correlation

• To assess prediction accuracy

• To calculate mean values

• To increase sample size

Which analysis examines relationships among three or more variables?

• Univariate Analysis

• Bivariate Analysis

• Discriminant Analysis

• Multivariate Analysis