Consider the
following answers (observed frequencies) to the
statement: “if consenting adults agree to exchange money for sex, that
is their
business.” Which sex is most likely to
agree? a. male
b.
female
MALE
FEMALE
AGREE
324
333
DISAGREE 305
443
chisquare = 10.316
p = 0.000
- Is the difference in
opinion between men and women on
this question statistically significant:
a. yes
b. no
- The majority of the respondents: a.
agree b.
disagree
- These data are:
a.
nominal b. ordinal c. interval d.
ratio
4. In the "Assignment" analysis, is the relationship: a.
positive b. negative
5. In the "Assignment" analysis, most of the students: a. did
most of the assignments b. did few of the assignments c.
did about half of the assignment
6. In the assignment analysis, the statistical method used
is: a. cross-tabulation b.
chi-square c. regression d. standard
deviation e. mean97.
If a student received only 50% of the assignment points (based on the
scattergram on the previous page), what grade would we predict he or
she would get on the final exam?
98. In the
question about payment for sex, what percentage of the men agree with
the
item?
99. What
percentage of the women agree with the
item?
100. What
percentage of those who agree are
men?
101. What
percentage of the respondents
agree?
102. If there
were no
difference between men and women on this issue, how many men (the
number, not the percent) would we "expect" to
agree:
103. If there
were no
difference between men and women on this issue, how many women (the
number, not the percent) would we "expect" to agree:
104. An
election survey sample included 875 white respondents, 150 black
respondents and 75 Hispanic respondents. What is the margin of
error for percentages based on the entire
sample?
.
105. For the
survey in the preceding item, what is the margin of error for results
based only on the Hispanic
respondents?
.
106. If the
researcher wanted to have a 3% margin of error for results for each of
the three groups (White, Hispanic and Black), how large a sample would
he or she
need?
.
107. If we want
a margin of error of 5% in a survey of South Jersey residents, a region
with 300,000 residents, how large a sample do we
need?
Analysis of
Variance
Dependent Variable: FinalExam
N:
66 Missing: 0
Multiple R-Square =
0.149 Y-Intercept = 35.335
Standard error of the estimate =
10.836
LISTWISE deletion (1-tailed
test) Significance Levels: **=.01, *=.05
Source Sum of Squares
DF Mean Square F
Prob.
REGRESSION 1291.326
2 645.663 5.498
0.006
RESIDUAL 7398.068
63 117.430
TOTAL 8689.394 65
Unstand.b
Stand.Beta Std.Err.b t
Attendance
0.090 0.098
0.164
0.546
Assignment
0.346 0.306
0.203
1.705
108. Based on the regression
output above, which variable is the best predictor of final exam
grades:
109. Considering both attendance
and assignments, what percent of the variance in final exam grades can
be
predicted:
110. Considering the data above,
if a student got 90 points on assignments and 80 points on attendance,
what final exam grade would we
predict?
.
111. If a student got 90 points
on attendance and 100 points on assignments, what final exam
grade would we predict?
If seven students go the
following scores - 85, 82, 91, 55, 65, 73, 81 - what would the mean
score
be?
.
112. For the same seven students,
what would the median score
be?
.
113. And what would the standard
deviation
be?