FINAL EXAM SOCIAL STATISTICS
QUESTIONS WITH ACCURATE
ANSWERS
23 of the 50 states rejected a proposed constitutional amendment to make the
house fly the National Insect. What percentage is this correct answer
A math professor is comparing the test scores for his two classes, Class A and
Class B, to see which class has the highest overall scores. Compute the mean for
both classes to determine which class has the highest average test score.
Class A: 71 87 75 78 93 99 64 83 83
Class B: 67 68 92 97 74 76 89 80 81 correct answer
A math professor is wondering what the dispersion of test scores for his class is
based on the last exam. The mean of scores is 81. Compute the standard
deviation.
Scores: 73, 89, 75, 93, 91 correct answer
A random sample of 15 families representing three social classes has been
observed for the frequency with which the parents administer physical
punishment to the children over a period of a week. Calculate the F ratio to
determine whether the differences are significant.
SST= 221. 73
SSB= 22.93
, SSW = 198.80
dfb = k-1
dfw = N-k correct answer
A researcher selected a sample of 156 former student leaders from a list of
graduates of a large university. She discovered that it had taken an average of
4.97 years for these graduates to finish their degrees, with a standard deviation of
1.23. The average for the entire student body is 4.56 years. Is the difference
statistically significant? Alpha = 0.05; two-tailed test correct answer
A Z score of -2.00 indicates a score that lies correct answer
An EPSEM sampling technique that often uses geographical areas is called correct
answer
ANOVA is appropriate for situations in which correct answer
Calculate a 95% confidence interval: Of the 1220 respondents for whom we have
information, 178 said that they had been divorced at least once. correct answer
Choose the nominal level variable below: correct answer
City A (population = 1567) had 34 auto thefts last year. City B (population =
34567) had 40 auto thefts in the same time period and City C (population =
156,980) had 70 auto thefts. Which city had the highest RATE of auto theft?
correct answer City A
QUESTIONS WITH ACCURATE
ANSWERS
23 of the 50 states rejected a proposed constitutional amendment to make the
house fly the National Insect. What percentage is this correct answer
A math professor is comparing the test scores for his two classes, Class A and
Class B, to see which class has the highest overall scores. Compute the mean for
both classes to determine which class has the highest average test score.
Class A: 71 87 75 78 93 99 64 83 83
Class B: 67 68 92 97 74 76 89 80 81 correct answer
A math professor is wondering what the dispersion of test scores for his class is
based on the last exam. The mean of scores is 81. Compute the standard
deviation.
Scores: 73, 89, 75, 93, 91 correct answer
A random sample of 15 families representing three social classes has been
observed for the frequency with which the parents administer physical
punishment to the children over a period of a week. Calculate the F ratio to
determine whether the differences are significant.
SST= 221. 73
SSB= 22.93
, SSW = 198.80
dfb = k-1
dfw = N-k correct answer
A researcher selected a sample of 156 former student leaders from a list of
graduates of a large university. She discovered that it had taken an average of
4.97 years for these graduates to finish their degrees, with a standard deviation of
1.23. The average for the entire student body is 4.56 years. Is the difference
statistically significant? Alpha = 0.05; two-tailed test correct answer
A Z score of -2.00 indicates a score that lies correct answer
An EPSEM sampling technique that often uses geographical areas is called correct
answer
ANOVA is appropriate for situations in which correct answer
Calculate a 95% confidence interval: Of the 1220 respondents for whom we have
information, 178 said that they had been divorced at least once. correct answer
Choose the nominal level variable below: correct answer
City A (population = 1567) had 34 auto thefts last year. City B (population =
34567) had 40 auto thefts in the same time period and City C (population =
156,980) had 70 auto thefts. Which city had the highest RATE of auto theft?
correct answer City A
