EPPP Questions Research and Statistics correctly answered 2023(updated)

EPPP Questions Research and Statistics correctly answered 2023(updated)EPPP Questions Research and Statistics correctly answered 2023 R squared is the: a. coefficient of multiple determination b. coefficient of stability c. coefficient of internal consistency d. silver character on "Star Wars" - correct answer a. coefficient of multiple determination When data points are widely scattered around a regression line, this indicates: a. low homoscedasticity b. low correlation coefficient c. low heteroscedasticity d. high heteroscedasticity - correct answer b. low correlation coefficient Heteroscedasticity - correct answer The scatter is uneven (unequal) at different points on the regression line. For example, there might be high variability around the regression line at low X (predictor) values and low variability around the line at high X values. It is different amounts of scatter, but not high scatter A psychologist in a hospital is conducting research designed to assess the effects of a new drug on the social behavior of psychotic patients. Which of the following would be the best way to decrease experimenter bias in this type of study? a. randomized block design b. a Solomon four-group design c. counterbalancing d. a double-blind study - correct answer d. a double blind study Which of the following is a measure of "amount of variability accounted for"? a. Cohen's d b. F-ratio c. alpha d. eta squared - correct answer d. eta squared