1. Ethnicity is an example of a a. quantitative variable

b. categorical variable c. absolute variable

d. continuous variable

2. In biostatistics, the entire group of individuals about which we want information is called a a. block

b. sample

c. population d. group

3. A numerical value used as a summary measure for a sample, such as samplemean, is known as a

4. is an example of a

Ipledgeon myhonorthat I have not given or received any unauthorized assistance on this examination. I understand that any violation of the Quinnipiac University Integrity Policy will be cause for investigation. Signed ____________________________________( your name)

a. population parameter b. sample parameter

c. sample statistic

d. population mean

e. None of the above answers is correct

a. population parameter b. sample statistic

c. population variance

d. mode

e. None of the above answers is correct.

5. Which of the following is not a measure of central location?

a. mean

b. median

c. variance

d. mode

e. None of the above answers is correct.

6. The most frequently occurring value of a data set is called the

a. range

b. mode

c. mean

d. median

e. None of the above answers is correct.

Sampling Methods: simple random, random, convenience, stratified, cluster

7. In order to conduct a study of Abbott Pharmaceutical shareholder opinions about the release of a new vaccine for the coronavirus in the US, a list of shareholders'zip codes is compiled. All shareholders from 15 different randomly chosen zip codes are selected to be surveyed. What sampling method is being employed in this study?Justify your answer.

8. Biologists divide the regions where red foxes are found into Neartic, Paleartic, Oriental, Ethiopean, and the Australian region. They plan to tag and follow 100 female foxes from each region to find the average (mean) number of offspring. What sampling method is being employed in this study?Justify your answer.

9.A statistics class with 36 students is arranged so that there are 6 rows with 6 students in each row, and the rows are numbered from 1 through 6. A die is rolled and a sample consists of all students in the row corresponding to the outcome of the die.Is this an example of a simple random sample?Explain your reasoning.

10. Shown below is the exercise tolerance (in minutes) of a sample of 12 female college students. 20 21 32 33 34 35 36 38 39 43 45

What percentile is the student whose exercise tolerance number is 38 minutes in? Show or explain how you arrived at that percentile.

11. As part of the National Health and Nutrition Examination Survey, subjects in a sample were asked how long they slept the preceding night, and the following times (hours) were reported

ExhibitA:10 5 7 5 7 4 7 6 7 8 8 6

1. a)Referring to Exhibit A, calculate the sleepmean.
2. b)Referring to Exhibit A, calculate the sleepmode.
3. c)Referring to Exhibit A, calculate the sleepmedian.

. . . continued on next page

d) e) f) g)

Referring to Exhibit A, calculate the sleepstandard deviation(rounded to the nearest tenth.)

Referring to Exhibit A, calculate the sleepvariance(rounded to the nearest tenth.) Write the five-number summary of the data shown in Exhibit A.

Is the sleep time of 10 hours considered anoutlier? Justify your answer mathematically.

h) What is the value of thez-scorefor a sleep time of 3 hours? Show how you arrived at your answer.