Question 1

Describe the kind of bias that might be present if the administration decides that instead of
subjecting people to random testing they'll just…
a. drop grains of rice on the aerial photo of the hill and inspect the trees that had rice land
on them.
b. ask the farmer to choose which trees he would like tested.

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Question 2

Identify the factors and levels.

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Question 3

Is this study blind?

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Question 4

Name the sampling strategy in each plan.

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Question 5

Identify the subjects.

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Question 6

Identify the following:
a. the subjects
b. the factor(s) and the number of level(s) for each
c. the number of treatments
d. whether or not the experiment is blind (or double-blind)
e. the response variable

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a. the subjects
b. the factor(s)...

Question 7

Identify the response variable.

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Question 8

Design an experiment to determine if the home teams have an unfair advantage when
shooting free-throws.

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Question 9

There are 1,237 trees on the hill. Explain how to use a random digit table to select a simple
random sample of 20 trees. Then use the random digit table below to select the first five
trees for your sample.

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Question 10

Identify the treatments.

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Question 11

Describe how to use a retrospective study to determine if the home teams have an unfair
advantage when shooting free-throws.

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Question 12

Identify the treatments.

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Question 13

Describe an advantage of the placebo.

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Question 14

Describe how to use a prospective study to determine if the home teams have an unfair
advantage when shooting free-throws.

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Question 15

Describe an advantage to random assignment of treatment.

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Question 16

Explain why the last plan suggested above, selecting the ten trees closest to the parking lot,
might be biased. Be sure to name the kind(s) of bias you describe and link it to the variable
of interest.

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Question 17

Describe a disadvantage of using volunteers in this study.

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Question 18

Identify the subjects.

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Question 19

Design an experiment to determine whether the diet and exercise programs are effective in
helping dogs to lose weight.

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Question 20

Identify the response variable.

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Quiz 8: Regression, Associations, and Predictive Modeling

Identify the factors and levels.

Is this study blind?

Name the sampling strategy in each plan.

Identify the subjects.

Identify the following: a. the subjects b. the factor(s) and the number of level(s) for each c. the number of treatments d. whether or not the experiment is blind (or double-blind) e. the response variable

Identify the response variable.

Design an experiment to determine if the home teams have an unfair advantage when shooting free-throws.

There are 1,237 trees on the hill. Explain how to use a random digit table to select a simple random sample of 20 trees. Then use the random digit table below to select the first five trees for your sample.

Identify the treatments.

Describe how to use a retrospective study to determine if the home teams have an unfair advantage when shooting free-throws.

Identify the treatments.

Describe an advantage of the placebo.

Describe how to use a prospective study to determine if the home teams have an unfair advantage when shooting free-throws.

Describe an advantage to random assignment of treatment.

Explain why the last plan suggested above, selecting the ten trees closest to the parking lot, might be biased. Be sure to name the kind(s) of bias you describe and link it to the variable of interest.

Describe a disadvantage of using volunteers in this study.

Identify the subjects.

Design an experiment to determine whether the diet and exercise programs are effective in helping dogs to lose weight.

Identify the response variable.