Question 1

Name and describe the kind of bias that might be present if the statistics teacher decides
that instead of randomly selecting students to survey on how they feel about the course she
just…
a. asks students to volunteer for the survey.
b. gives the survey during class one day.

Accepted Answer

The answer of Name and describe the kind of bias...

Question 2

One manager suggesting just going to the stores in the city where the company is
headquartered so they wouldn't have to travel far. What type of sampling would this be?
Explain why this method is biased. Be sure to name the kind(s) of bias you describe and
link it to the variable of interest.

Accepted Answer

The answer of One manager suggesting just going to the...

Question 3

Name and 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. interview employees about possible drug abuse.
b. ask people to volunteer to be tested.

Accepted Answer

The answer of Name and describe the kind of bias...

Question 4

Show three trials by clearly labeling the random number table given below. Specify the
outcome for each trial.

Accepted Answer

The answer of Show three trials by clearly labeling the...

Question 5

Listed below are the names of 20 students who are juniors. Use the random numbers listed
below to select five of them to be in your sample. Clearly explain your method. $\begin{array}{|l|l|l|l|l|}
\hline \text { Adam } & \text { Chris } & \text { Dave } & \text { Deirdre } & \text { Dick } \
\hline \text { Ellen } & \text { Eric } & \text { Joan } & \text { John } & \text { Judi } \
\hline \text { Joy } & \text { Kenny } & \text { Laura } & \text { Mary } & \text { Paul } \
\hline \text { Peter } & \text { Rachel } & \text { Rob } & \text { Sara } & \text { Stacey } \
\hline
\end{array}$

Accepted Answer

The answer of Listed below are the names of 20...

Question 6

Listed below are the names of the 20 pharmacists on the hospital staff. Use the random
numbers listed below to select three of them to be in the sample. Clearly explain your
method. $\begin{array}{|c|c|}
\hline \text { Pastore } & \text { Back } \
\hline \text { Spiridinov } & \text { Ahl } \
\hline \text { Hedge } & \text { MacDowell } \
\hline \text { Schissel } & \text { Novelli } \
\hline \text { Lavine } & \text { Kaplan } \
\hline \text { Highland } & \text { Roundy } \
\hline \text { Grubb } & \text { Markowitz } \
\hline \text { Glass } & \text { Davies } \
\hline \text { Golkowski } & \text { Reeves } \
\hline \text { Janis } & \text { Yen } \
\hline
\end{array}$

Accepted Answer

The answer of Listed below are the names of the...

Question 7

Describe how you will use a random number table to conduct this simulation.

Accepted Answer

The answer of Describe how you will use a random...

Question 8

Show three trials by clearly labeling the random number table given below. Specify the
outcome for each trial.

Accepted Answer

The answer of Show three trials by clearly labeling the...

Question 9

Name and describe the kind of bias that might be present if the management decides that
instead of subjecting people to random testing they'll just…
a. Hold department meetings and drug test the employees that attend.
b. Offer additional employee discounts for those employees who agree to be drug tested.

Accepted Answer

The answer of Name and describe the kind of bias...

Question 10

Describe how you will use a random number table to conduct this simulation.

Accepted Answer

The answer of Describe how you will use a random...

Question 11

State your conclusion.

Accepted Answer

The answer of State your conclusion....

Question 12

Name the sampling strategy in each plan.

Accepted Answer

The answer of Name the sampling strategy in each plan....

Question 13

Name the sampling strategy in each plan.

Accepted Answer

The answer of Name the sampling strategy in each plan....

Question 14

State your conclusion.

Accepted Answer

The answer of State your conclusion....

Question 15

If the teacher in simply surveyed all of her students, what kind of sampling would that be? 14)
Explain why this method is biased. Be sure to name the kind(s) of bias you describe and
link it to the variable of interest.

Accepted Answer

The answer of If the teacher in simply surveyed all...

Question 16

Listed at the right are the names of twenty full-time clerks on the retail staff. Use the
random numbers listed below to select four of them to be in your sample. Clearly explain
your method. $\begin{array}{|c|c|c|c|}
\hline \text { Larry } & \text { Marissa } & \text { Tim } & \text { Diane } \
\hline \text { Carol } & \text { Joshua } & \text { Barbara } & \text { Allan } \
\hline \text { Rich } & \text { Sharyn } & \text { Brian } & \text { Kelly } \
\hline \text { Nicole } & \text { John } & \text { June } & \text { Frank } \
\hline \text { Steve } & \text { Andrea } & \text { Matthew } & \text { Erin } \
\hline
\end{array}$

Accepted Answer

The answer of Listed at the right are the names...

Question 17

One administrator suggested walking into the break room and testing the people in there.
What type of sampling would this be? Explain why this method is biased. Be sure to name
the kind(s) of bias you describe and link it to the variable of interest.

Accepted Answer

The answer of One administrator suggested walking into the break...

Question 18

State your conclusion

Accepted Answer

The answer of State your conclusion...

Question 19

Show three trials by clearly labeling the random number table given below. Specify the
outcome for each trial. $$\begin{array} { l l l l } 
57528 & 78305 & 63508 & 29418 \
90676 & 31993 & 54636 & 17877 \
31574 & 28042 & 72621 & 84818
\end{array}$$

Accepted Answer

The answer of Show three trials by clearly labeling the...

Question 20

Name the sampling strategy in each plan.

Accepted Answer

The answer of Name the sampling strategy in each plan....

Quiz 8: Regression, Associations, and Predictive Modeling

Name and describe the kind of bias that might be present if the statistics teacher decides that instead of randomly selecting students to survey on how they feel about the course she just… a. asks students to volunteer for the survey. b. gives the survey during class one day.

One manager suggesting just going to the stores in the city where the company is headquartered so they wouldn't have to travel far. What type of sampling would this be? Explain why this method is biased. Be sure to name the kind(s) of bias you describe and link it to the variable of interest.

Name and 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. interview employees about possible drug abuse. b. ask people to volunteer to be tested.

Show three trials by clearly labeling the random number table given below. Specify the outcome for each trial.

Describe how you will use a random number table to conduct this simulation.

Show three trials by clearly labeling the random number table given below. Specify the outcome for each trial.

Describe how you will use a random number table to conduct this simulation.

State your conclusion.

Name the sampling strategy in each plan.

Name the sampling strategy in each plan.

State your conclusion.

If the teacher in simply surveyed all of her students, what kind of sampling would that be? 14) Explain why this method is biased. Be sure to name the kind(s) of bias you describe and link it to the variable of interest.

One administrator suggested walking into the break room and testing the people in there. What type of sampling would this be? Explain why this method is biased. Be sure to name the kind(s) of bias you describe and link it to the variable of interest.

State your conclusion

Show three trials by clearly labeling the random number table given below. Specify the outcome for each trial. $\begin{array} { l l l l } 57528 & 78305 & 63508 & 29418 \\90676 & 31993 & 54636 & 17877 \\31574 & 28042 & 72621 & 84818\end{array}$

Name the sampling strategy in each plan.