Question 1) A poll is planned to determine what proportion of all st

1) A poll is planned to determine what proportion of all students favor an increase in fees to support a new track and field stadium. A questionnaire will be published and the first 1000 completed questionnaires will be analyzed. Which of the following errors will be associated with the sample?

A. Sampling errors only

B. Sampling errors and errors due to selection bias

C. Only non-sampling errors

D. Errors due to interviewer bias and selection bias

2) A recent study of breast cancer revealed that 13% of the women in the sample used antibiotics more than 500 days in their lifetime. Further, 79% of these “heavy antibiotics users” developed breast cancer. According to the American Cancer Society, one in twelve women will develop breast cancer at some time in her life. Of the numbers mentioned, which are parameters?

A. 79% and one in twelve

B. 13% and 79%

C. 79% and 500 days

D. 13% and one in twelve

3) What is the difference between probability sampling and simple random sampling?

A. In probability sampling each item has an identical chance of being chosen.

B. There is no difference.

C. Simple random sampling is a type of probability sampling.

D. Probability sampling is a type of simple random sample.

4) Which of the following is NOT a reason one should have knowledge of statistics?

A. To be able to mount an effective effort to change a government regulation that negatively affects one’s business

B. To help interpret existing information

C. To increase the amount of information available for use

D. To make future projections of one’s sales

5) Which of the following is an example of statistical inference?

A. Calculating the amount of fly spray needed for your orchard next season.

B. Calculating the mean age of patients discharged from hospitals in New York State in 1997.

C. Counting the number of patients who file malpractice suits after being discharged from hospitals in New York State.

D. Calculating the mean number of fruit trees damaged by Mediterranean fruit flies in California last year.

6) Which of the following is NOT a characteristic of an ideal statistician?

A. Can deal with imperfect information

B. Adapts answers to client desires

C. Technically current (e.g. software)

D. Communicates well (both written and oral)

7) If terms such as positive, negative, more than, and less than, are used, then these hypotheses are_________.

A. nondirectional hypotheses

B. null hypotheses

C. directional hypotheses

D. alternative hypotheses

8) A ___________ variable changes the relationship between the independent and dependent variables.

A. moderating

B. intervening

C. dependent

D. independent

9) Which of the following is NOT a potential source of survey error?

A. Interviewer error

B. Coverage error

C. Measurement error

D. Standard error

10) Which of these is NOT an acceptable type of survey question?

A. leading question

B. ranking questions

C. pictograms

D. Likert scale

11) Name the item that is NOT a recognized survey guideline.

A. quality control

B. design

C. ability to find friendly survey respondents

D. pilot or beta test

12) Which of the following is NOT an ethical concern for the statistical researcher?

A. Conceal financial support

B. Maintain data accuracy

C. Accurate reporting of procedures

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