,Exam
Name___________________________________
SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question.
Provide an appropriate response.
1) A college employs 85 faculty members. Without replacement, select the numbers of the 1)
five members who will serve on the tenure committee next year.
16348 76938 90169 51392 55887 71015 09209 79157
Determine whether the numerical value is a parameter or a statistic. Explain your reasoning.
2) A recent survey by the alumni of a major university indicated that the average salary of 2)
12,000 of its 175,000 graduates was $95,000.
Provide an appropriate response.
3) Explain why data expressed with the Celsius temperature scale is at the interval level of 3)
measurement rather than the ratio level.
Identify the population and the sample.
4) A survey of 1,947 American households found that 53% of the households own a computer. 4)
Provide an appropriate response.
5) Explain what bias there is in a study done entirely online. 5)
Identify the population and the sample.
6) When 1,564 American households were surveyed, it was found that 56% of them owned 6)
two cars.
Determine whether the numerical value is a parameter or a statistic. Explain your reasoning.
7) The average salary of all assembly-line employees at a certain car manufacturer is $42,000. 7)
Provide an appropriate response.
8) A report sponsored by the California Citrus Commission stated that cholesterol levels can 8)
be lowered by drinking at least one glass of a citrus product each day. Determine if the
report is biased.
9) There are 750 incoming freshmen attending a university this fall. A researcher wishes to 9)
send questionnaires to a sample of 30 of them to complete regarding their drinking habits.
Select the numbers of the first five freshmen who belong to the simple random sample.
16348 76938 90169 51392 55887 71015 09209 79157
10) If you had to do a statistical study, would you use a sample or a population? Why? 10)
1
,Identify the experimental units and treatments used in the experiment.
11) A medical researcher center wants to test the effectiveness of a new diabetes medication. 11)
The company identifies 10 adults suffering from a similar form of diabetes. The subjects are
randomly assigned to two groups. One group is given a medication and the other is given
a placebo that looks exactly like the medication. After three months, the subjects'
symptoms are studied and compared.
Provide an appropriate response.
12) Explain the differences between cluster sampling and stratified sampling. 12)
Identify the population and the sample.
13) A survey of 2625 elementary school children found that 28% of the children could be 13)
classified as obese.
Provide an appropriate response.
14) Explain the differences between the interval and ratio levels of measurement. 14)
15) A local newspaper ran a survey by asking, "Do you support the deployment of a weapon 15)
that could kill millions of innocent people?" Determine whether the survey question is
biased.
16) Explain the difference between a sample and a population. 16)
Determine whether the numerical value is a parameter or a statistic. Explain your reasoning.
17) A survey of 1,678 students was taken from a university with 16,500 students. 17)
Provide an appropriate response.
18) Of the 5000 outpatients released from a local hospital in the past year, one hundred were 18)
contacted and asked their opinion on the care they received. Select the first five patients
who belong to the simple random sample.
16348 76938 90169 51392 55887 71015 09209 79157
19) Explain the difference between a census and a sampling and describe the advantages and 19)
disadvantages of each.
20) After a hurricane, a disaster area is divided into 200 equal grids. Thirty of the grids are 20)
selected and every occupied household in the grid is interviewed to help focus relief
efforts. Select the numbers of the first five grids that belong to the cluster sample.
16348 76938 90169 51392 55887 71015 09209 79157
2
, MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
Determine whether the study is an observational study or an experiment.
21) The personnel director at a large company would like to determine whether the company cafeteria 21)
is widely used by employees. She calls each employee and asks them whether they usually bring
their own lunch, eat at the company cafeteria, or go out for lunch.
A) experiment B) observational study
Identify whether the statement describes inferential statistics or descriptive statistics.
22) There is a relationship between smoking cigarettes and getting emphysema. 22)
A) inferential statistics B) descriptive statistics
Identify the sampling technique used.
23) At a local community college, five statistics classes are randomly selected out of 20 and all of the 23)
students from each class are interviewed.
A) cluster
B) stratified
C) convenience
D) systematic
E) random
24) A lobbyist for a major airspace firm assigns a number to each legislator and then uses a computer 24)
to randomly generate ten numbers. The lobbyist contacts the legislators corresponding to these
numbers.
A) random
B) systematic
C) stratified
D) convenience
E) cluster
Use the Venn diagram to identify the population and the sample.
25) 25)
A) Population: Magazine subscribers; Sample; Magazine subscribers who renew their
subscription
B) Population: Magazine subscribers who renew their subscription; Sample: Magazine
subscribers
3
Name___________________________________
SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question.
Provide an appropriate response.
1) A college employs 85 faculty members. Without replacement, select the numbers of the 1)
five members who will serve on the tenure committee next year.
16348 76938 90169 51392 55887 71015 09209 79157
Determine whether the numerical value is a parameter or a statistic. Explain your reasoning.
2) A recent survey by the alumni of a major university indicated that the average salary of 2)
12,000 of its 175,000 graduates was $95,000.
Provide an appropriate response.
3) Explain why data expressed with the Celsius temperature scale is at the interval level of 3)
measurement rather than the ratio level.
Identify the population and the sample.
4) A survey of 1,947 American households found that 53% of the households own a computer. 4)
Provide an appropriate response.
5) Explain what bias there is in a study done entirely online. 5)
Identify the population and the sample.
6) When 1,564 American households were surveyed, it was found that 56% of them owned 6)
two cars.
Determine whether the numerical value is a parameter or a statistic. Explain your reasoning.
7) The average salary of all assembly-line employees at a certain car manufacturer is $42,000. 7)
Provide an appropriate response.
8) A report sponsored by the California Citrus Commission stated that cholesterol levels can 8)
be lowered by drinking at least one glass of a citrus product each day. Determine if the
report is biased.
9) There are 750 incoming freshmen attending a university this fall. A researcher wishes to 9)
send questionnaires to a sample of 30 of them to complete regarding their drinking habits.
Select the numbers of the first five freshmen who belong to the simple random sample.
16348 76938 90169 51392 55887 71015 09209 79157
10) If you had to do a statistical study, would you use a sample or a population? Why? 10)
1
,Identify the experimental units and treatments used in the experiment.
11) A medical researcher center wants to test the effectiveness of a new diabetes medication. 11)
The company identifies 10 adults suffering from a similar form of diabetes. The subjects are
randomly assigned to two groups. One group is given a medication and the other is given
a placebo that looks exactly like the medication. After three months, the subjects'
symptoms are studied and compared.
Provide an appropriate response.
12) Explain the differences between cluster sampling and stratified sampling. 12)
Identify the population and the sample.
13) A survey of 2625 elementary school children found that 28% of the children could be 13)
classified as obese.
Provide an appropriate response.
14) Explain the differences between the interval and ratio levels of measurement. 14)
15) A local newspaper ran a survey by asking, "Do you support the deployment of a weapon 15)
that could kill millions of innocent people?" Determine whether the survey question is
biased.
16) Explain the difference between a sample and a population. 16)
Determine whether the numerical value is a parameter or a statistic. Explain your reasoning.
17) A survey of 1,678 students was taken from a university with 16,500 students. 17)
Provide an appropriate response.
18) Of the 5000 outpatients released from a local hospital in the past year, one hundred were 18)
contacted and asked their opinion on the care they received. Select the first five patients
who belong to the simple random sample.
16348 76938 90169 51392 55887 71015 09209 79157
19) Explain the difference between a census and a sampling and describe the advantages and 19)
disadvantages of each.
20) After a hurricane, a disaster area is divided into 200 equal grids. Thirty of the grids are 20)
selected and every occupied household in the grid is interviewed to help focus relief
efforts. Select the numbers of the first five grids that belong to the cluster sample.
16348 76938 90169 51392 55887 71015 09209 79157
2
, MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
Determine whether the study is an observational study or an experiment.
21) The personnel director at a large company would like to determine whether the company cafeteria 21)
is widely used by employees. She calls each employee and asks them whether they usually bring
their own lunch, eat at the company cafeteria, or go out for lunch.
A) experiment B) observational study
Identify whether the statement describes inferential statistics or descriptive statistics.
22) There is a relationship between smoking cigarettes and getting emphysema. 22)
A) inferential statistics B) descriptive statistics
Identify the sampling technique used.
23) At a local community college, five statistics classes are randomly selected out of 20 and all of the 23)
students from each class are interviewed.
A) cluster
B) stratified
C) convenience
D) systematic
E) random
24) A lobbyist for a major airspace firm assigns a number to each legislator and then uses a computer 24)
to randomly generate ten numbers. The lobbyist contacts the legislators corresponding to these
numbers.
A) random
B) systematic
C) stratified
D) convenience
E) cluster
Use the Venn diagram to identify the population and the sample.
25) 25)
A) Population: Magazine subscribers; Sample; Magazine subscribers who renew their
subscription
B) Population: Magazine subscribers who renew their subscription; Sample: Magazine
subscribers
3
