A survey is a qualitative method of data collection.
Indicate whether the statement is true or false
Ques. 2Which of the following variable is not a good predictor of a state's average pupil teacher ratio?
a. the percentage of the population residing in urban areas.
b. the amount of money spent per pupil.
c. median family incomes.
d. all of the above have a statistically significant effect on pupil teacher ratios
Ques. 3According to the results in Chapter Fifteen, which of the following variables has the greatest negative effect on eighth grade math scores?
a. the percentage of families headed by a single female
b. the percentage of families below the poverty line.
c. the percentage of children who watch more than 6 hours of television per day.
d. all three variables had an equal effect on math scores
Ques. 4Beta is most useful for
a. measuring the combined effects of two or more independent variables on the dependent variable.
b. the independent effect of each of the independent variables on the dependent variable.
c. determining statistical significance.
d. selecting a representative sample.
Ques. 5The results of the regression analysis in Chapter Fifteen reveal that when the percentage of students taking the SAT test is controlled for,
a. states that spend more per pupil have higher average SAT scores.
b. states with the highest average teacher salary have higher average SAT scores.
c. neither spending per pupil nor teacher salaries has a statistically significant impact on SAT scores.
d. both spending per pupil and teacher salaries have a statistically significant impact on SAT scores.
Ques. 6Multiple regression is most useful for assessing
a. whether the results from a sample are just a random fluke.
b. the impact of more than one variable at a time.
c. whether two variables are related to each other.
d. whether a sample is large enough to be considered representative of the entire population from which it was drawn.
Ques. 7The states with the highest SAT scores are
a. located in the South.
b. located along the West Coast.
c. those that have the most students taking the test.
d. those that have the fewest students taking the test.
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