Research shows that aptitude scores are better predictors of achievement in the lower grades than in college. This finding can best be interpreted to mean that
a. college students are not as predictable as elementary school pupils.
b. aptitude tests should not be used with college students.
c. there is less variability in aptitude and achievement among elementary school students than among college students.
d. there is greater variability in aptitude and achievement among elementary school students than among college students.
e. college teachers tend to be more objective in grading than elementary school teachers.
Ques. 2A researcher wishes to predict those college students who will be persistent in their education, that is, those who will stay in college and graduate within five years as opposed to those who will not complete a degree within five years. Which of the following methods would the researcher use?
a. Factor analysis
b. Partial correlation
c. Path analysis
d. Multiple regression
e. Discriminant analysis
Ques. 3The Pearson's product-moment correlation coefficient is used to measure the
a. magnitude of the curvilinear relationship between two variables.
b. linearity of the relationship between two variables.
c. direction of the curvilinear relationship between two variables.
d. magnitude and direction of the linear relationship between two variables.
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