Psychometrics Study Guide| 70 Questions| With Complete Solutions

What level of measurement would be used if participants were asked to choose their favorite picture from a set of six? a. Ordinal b. Interval c. Ratio d. Nominal correct answer: D What is the difference between data measured on an interval scale and data measured on a ratio scale? a. A ratio scale has a true zero point, so zero on the scale corresponds to zero of the concept being measured. b. An interval scale has a true zero point, so zero on the scale corresponds to zero of the concept being measured. c. A ratio scale puts scores into categories, while an interval scale measures on a continuous scale. d. A ratio scale has equal intervals between the points on the scale, whereas an interval scale does not. correct answer: A A likert-style (i.e., agree to disagree) rating system technically falls under the __________________ level of measurement, but most psychologists interpret it as falling under a _______________ level of measurement. correct answer: Ordinal; interval Why is the scale of measurement assumption about likert-style rating systems being interval potentially problematic? correct answer: WE ASSUME WE CAN CALCULATE