A stanine score of six would have a
T-score of
a. 60.
b. above 50.
c. between 45 and 55.
d. between 55 and 65.
e. below 60.
Ques. 2Correlating the scores of 50 students on two tests, an investigator found that the sum of the
z-score cross-products was 20. The Pearsons product moment coefficient in this case is:
a. impossible to compute with the information given.
b. .02.
c. .20.
d. .40.
e. None of these are true.
Ques. 3In order to compute a correlation coefficient between traits A and B, it is necessary to have:
a. one group of subjects, some of whom possess characteristics of trait A, the remainder possessing those of trait B.
b. measures of trait A on one group of subjects and of trait B on another.
c. one group of subjects, some of whom have both A and B, some have neither, and some have one but not the other.
d. two groups of subjects, one which could be classified as A or not A, the other as B or not B.
e. measure of traits A and B on each subject in one group.
Ques. 4Which of the following is a bivariate distribution?
a. Incomes of Denver teachers
b. Reading test scores of 50 children taught by the phonics method
c. Nursing license examination results for only male candidates
d. Home-economics aptitude test scores of this year's freshmen
e. Number of arrests made and years of experience of San Francisco policemen
Ques. 5Standard deviation is
a. from the same statistical family as the mean.
b. used in conjunction with the median.
c. less stable than variance.
d. a measure of central tendency.
Ques. 6The mean of the squared deviation scores is called
a. Pearsons
r. c. variance.
b. standard deviation.
d. range.
Ques. 7Refer to Exhibit 6-5. We want to see how scores on this examination are related to scores on another examination.
a. mean
c.
z-score
b. standard deviation
d. Pearsons
r