Anh plans to study the effect of age on standardized test performance,and chooses to represent age with number of years of age and to represent standardized test performance with Graduate Record Examination (GRE)scores.In this study,age is a(n)________ variable and GRE scores are a(n)________ variable.
A)ratio;ratio
B)interval;ordinal
C)ratio;interval
D)ordinal;ratio

Question

Quizplus · Accepted Answer

Age can be measured on a ratio scale, as it has a true zero point (i.e., age zero means the absence of age). GRE scores can be measured on an interval scale, where the distance between scores is equal, but there is no true zero point (i.e., a GRE score of zero does not mean a lack of performance).

Anh Plans to Study the Effect of Age on Standardized