Part 1: Reliability and Validity
Grade point average (GPA) is often assumed to measure the intelligence of a student relative to that of other students. Give two reasons why GPA may NOT be reliable and two reasons why GPA may NOT be valid as a measure of the intelligence of college students. Propose an alternative measure of intelligence and explain why your proposed measure is valid and reliable?
Part 2: Level of Measurement
In answering the questions below, please refrain from using examples from the textbook OR from class lectures.
- Give two examples of a nominal-level variable and explain why each example is nominal.
- Give two examples of an ordinal-level variable and explain why each example is ordinal.
- Give two examples of an interval-level variable and explain why each example is interval.
- Give two examples of a ratio-level variable and explain why each example is ratio.