Free Printable Final Exam Review Part 1 (Units 1-4)

1.

Determine whether the data set is a population or sample: The number of students at one elementary school in Virginia that play an instrument.

a)

population

b)

sample

2.

Identify the population and sample: A survey of 1353 American households found that 18% of the households own a computer.

a)

Population: All American households; Sample: 1353 American households

b)

Population: 1353 American households; Sample: 18% of American households

c)

Population: All American households; Sample: 18% of American households

d)

none of the options

3.

Determine if the numerical value is a parameter or statistic: The average salary of all assembly line employees at a certain car manufacturer is $33,000

a)

parameter

b)

statistic

4.

Find the mean of the sample data:

41.6, 50.0, 49.5, 38.7, 39.9, 45.8, 44.7, 47.8, 40.5

a)

$\overline{x}=44.3$

b)

$\overline{x}=44.28$

c)

$\overline{x}=44$

d)

$\overline{x}=45$

5.

Find the median of the sample data:

41.6, 50.0, 49.5, 38.7, 39.9, 45.8, 44.7, 47.8, 40.5

a)

41.6

b)

50.0

c)

39.9

d)

44.7

6.

Find the mode of the sample data:

41.6, 50.0, 49.5, 38.7, 39.9, 45.8, 44.7, 47.8, 40.5

a)

41.6

b)

50.0

c)

39.9

d)

no mode

7.

Find the standard deviation and variance of the sample data:

41.6, 50.0, 49.5, 38.7, 39.9, 45.8, 44.7, 47.8, 40.5

a)

$s=4.28$ and $s^2=18.32$

b)

$\sigma=4.04$ and $\sigma^2=16.32$

c)

$s=4.3$ and $s^2=18.5$

d)

$\sigma=4.0$ and $\sigma^2=16$

8.

a)

10; 18; 31

b)

6; 18; 104

c)

10; 31; 104

d)

6; 10; 104

9.

a)

skewed right; median

b)

uniform; median

c)

none; mean

d)

Symmetric; mean

10.

Determine if the question is biased or not: What is your opinion about fast food?

a)

Biased

b)

Not Biased

11.

Identify the type of sampling method used:

A sociologist wants to know the opinions of employed adult women about government funding for day care. She obtains a list of the labeled 520 members of a local business and professional women’s club and mails a questionnaire to 100 of these women selected at random.

a)

SRS

b)

Stratified

c)

Systematic

d)

Convenience

e)

Cluster

12.

Identify the type of sampling method used:

Researchers waited outside a convenient store and stopped every 10th person who came out of the store and asked what their favorite snacks were.

a)

SRS

b)

Stratified

c)

Systematic

d)

Convenience

e)

Cluster

13.

Identify the bias present:

A business magazine mailed a questionnaire to the human resources directors of all of the Fortune 500 companies, and received responses from only 115 of them. Those responding reported that they did not find that such surveys intruded significantly on the workday.

a)

Voluntary Response Bias

b)

Nonresponse Bias

c)

Response Bias

14.

The ogive below shows the distribution of the amount spent (in dollars) by a sample of grocery shoppers at a store. How many total grocery shoppers spent money at the store?

a)

7

b)

93

c)

100

d)

691

15.

The ogive below shows the distribution of the amount spent (in dollars) by a sample of grocery shoppers at a store. How many grocery shoppers spent between $50 and $90?

a)

15

b)

80

c)

95

d)

175

16.

The customer service call center for a major electronics manufacturer is trying to determine how to keep customers who are on hold as happy as possible. They want to examine whether the type of music they play while customers are on hold and whether or not there is a periodically repeated recorded message (“Thank you for your patience, we’ll be with you as soon as possible.”) have an impact on customer satisfaction. They plan to randomly select customers who are on hold and play one of three different types of music (jazz, classical, or Broadway show tunes) and either play recorded messages or not. After the entire call is over, they will ask the customers to rate their overall customer service experience. Identify the subjects.

a)

Customer Service Call Center

b)

Customers

c)

Electronic Manufacturers

d)

none of the options

17.

The customer service call center for a major electronics manufacturer is trying to determine how to keep customers who are on hold as happy as possible. They want to examine whether the type of music they play while customers are on hold and whether or not there is a periodically repeated recorded message (“Thank you for your patience, we’ll be with you as soon as possible.”) have an impact on customer satisfaction. They plan to randomly select customers who are on hold and play one of three different types of music (jazz, classical, or Broadway show tunes) and either play recorded messages or not. After the entire call is over, they will ask the customers to rate their overall customer service experience. Identify the explanatory variable(s) and response variable(s)

a)

EV = type of music and message; RV = rating of overall customer service experience

b)

EV = customer service experience; RV = happiness of customer

c)

EV = call time; RV = overall customer service experience

d)

No EV or RV present

18.

A study of cell phones and the risk of brain cancer looked at a group of 469 people who have brain cancer. The investigators matched each patient with a person of the same sex, age, and race who did not have brain cancer, then asked about use of cell phones. This is...

a)

an observational study

b)

an uncontrolled experiment

c)

a randomized comparative experiment

d)

a matched pairs experiment

e)

a survey

19.

Determine if the data is qualitative or quantitative: The number of drink orders each customer put in at Starbucks.

a)

qualitative

b)

quantitative

20.

Determine if the data is qualitative or quantitative: The apartment numbers in a building.

a)

qualitative

b)

quantitative

Final Exam Review Part 1 (Units 1-4)

Total questions: 20

Worksheet time: 30mins

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