Quiz 4: Data Processing , Fundamental Data Analysis, and the Stat Testing of Differences

1.Finding the value that occurs most frequently determines the__________.

a.standard deviation

b.mean

c.variance

d.mode

2.Frequently used measures of dispersion do not include which of the following?

a.standard deviation

b.variance

c.mean

d.range

e.all are measures of dispersion

3. The interview validation is:

a. same as the measurement validity

b.careful numbering and editing of all questionnaires

c. the process of ensuring that the data recorded on the questionnaire was correctly and accurately collected and recorded.

d.same as editing and entering the data into the computer

4.What is the purpose of statistical inferences?

1. to fully describe the characteristics of the population
2. to make generalizations about population characteristics from sample results
3. to estimate mean, median, mode, variance, and skewness of large sample data
4. to study characteristics of binomial or poisson random variables

5.Error checking routines and marginal reports are part of which of the following processes?

1. a.determination of proper graphical aides in data analysis
2. b.determination of proper statistical techniques in data analysis
3. c.machine cleaning of the database
4. d.validation of questionnaires
5. e.coding of open-ended questions on questionnaires.

1. 6.This analytical procedure shows the responses to one question relative to the responses of another question:
2. a.one-way frequencies
3. b.cross tabulation
4. c.t-test
5. d.z-test
7. 7.A question that must be dealt with when one-way frequency tables
8. are generated is what base to use for the percentages for
9. each table. The following options are available
10. a. total respondents
11. b. number of people asked the particular question
12. c. number of people answering the question
13. d. total number of people in the population of interest
14. e.a, b, and c are correct answers

1. 8.This type of chart is the simplest form of chart and is useful for presenting a measurement taken at several points over time.
2. a. line chart
3. b.bar chart
4. c.pie chart
5. d.(b) and (c) are equally useful
7. 9.Which of the following is not part of the coding process regarding open-ended questions?
8. a.list responses
9. b.consolidate responses
10. c.set codes
11. d.enter codes
12. e.all are part of the coding process
14. 10.This measure of central tendency can be computed only from interval or ratio data.
15. a.mode
16. b.median
17. c.mean
18. d.all of the above must be computed from interval or ratio data
19. e.none of the above can be computed from interval or ratio data
21. 11.If an interviewer did not properly follow skip patterns specified in a questionnaire the ______________ step in data analysis would reveal the problem.
22. a.validation
23. b.editing
24. c.coding
25. d.analyzing
26. e.data cleaning
28. If a particular difference is large enough to be unlikely to have occurred because of chance or sampling error, then the difference is statistically significant.
30. Validation of a questionnaire involves checking for interviewer and respondent
31. mistakes.