Understanding Statistics in the Behavioral Sciences ... - NelsonBrain

Licensed to:
Answers to End-of-Chapter
Questions and Problems
and SPSS Problems
■ CHAPTER 1
6. b. (1) functioning of the hypothalamus; (2) daily
food intake; (3) the 30 rats selected for the experiment;
(4) all rats living in the university vivarium at
the time of the experiment; (5) the daily food intake
of each animal during the 2-week period after recovery;
(6) the mean daily food intake of each group
c. (1) methods of treating depression; (2) degree or
amount of depression; (3) the 60 depressed students;
(4) the undergraduate body at a large university at the
time of the experiment; (5) depression scores of the
60 depressed students; (6) mean of the depression
scores of each treatment d. (1) and (2) since this
is a study and not an experiment, there is no independent
variable and no dependent variable. The two
variables studied are the two levels of education and
the annual salaries for each educational level; (3) the
200 individuals whose annual salaries were determined;
(4) all individuals living in the city at the
time of the experiment, having either of the educational
levels; (5) the 200 annual salaries; (6) the
mean annual salary for each educational level
e. (1) spacing of practice sessions; (2) number of
words correctly recalled; (3) the 30 seventh graders
who participated in the experiment; (4) all seventh
graders enrolled at the local junior high school at the
time of the experiment; (5) the retention test scores
of the 30 subjects; (6) mean values for each group
APPENDIX C
of the number of words correctly recalled in the test
period f. (1) visualization versus visualization
plus appropriate self-talk; (2) foul shooting accuracy;
(3) the ten players participating in the experiment;
(4) all players on the college basketball team at the
time of the experiment; (5) foul shooting accuracy of
the ten players, before and after 1 month of practicing
the techniques; (6) the mean of the difference scores of
each group g. (1) the arrangement of typing keys;
(2) typing speed; (3) the 20 secretarial trainees who
were in the experiment; (4) all secretarial trainees
enrolled in the business school at the time of the experiment;
(5) the typing speed scores of each trainee
obtained at the end of training; (6) the mean typing
speed of each group
7. a. constant b. constant c. variable
d. variable e. constant f. variable
g. variable h. constant
8. a. descriptive statistics b. descriptive statistics
c. descriptive statistics d. inferential statistics
e. inferential statistics f. descriptive statistics
9. a. The sample scores are the 20 scores given. The
population scores are the 213 scores that would
have resulted if the number of drinks during “happy
hour” were measured from all of the bars. c. The
sample scores are the 25 lengths measured. The
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