Which of the following represents an example of a

9. Which of the following represents an example of a secondary data source?
A. The formula for Coca-Cola.
B. Population census data.
C. The new models to be introduced by Samsung in the next one to three
years.
D. Experiments.
10. What test is suitable to answer the following question:
“Do local students have higher attendance as compared to international
students?”
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SECTION B (Short Answer)
1. Identify potential sources of error that might be associated with the following
situations.
(a) A university gymnasium and sports centre interested in new members
prints a questionnaire in the local newspaper. Readers return the
questionnaires by mail.
(b) A shopping mall that wishes to evaluate its image places packets including
a questionnaire, cover letter, and stamped return envelope in the mall
where customers can pick them up if they wish.
(c) A survey of Facebook users ranks MacBooks as far superior to other
personal computers for business applications.
(d) An insurance company obtains a 75 per cent response rate from a sample
of university students contacted by mobile phone in a study of attitudes
towards health insurance.
2. Evaluate and comment on the following questions, taken from several
questionnaires.
(a) A university computer center survey on SPSS usage:
How often do you use SPSS statistical software? Please check one.
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 All the time (daily)
Comments: The words used are ambiguous (frequently, etc). The options do not
cover every answer possible
Suggestion: Make questions clearer-> how many times do you use?
Change options to: 1-5, 5-10, etc