Ch. 9 & 10 Partner Test- SPA

Last updated almost 5 years ago

14 questions

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4

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Ch. 9 & 10 Partner Test- SPA

Last updated almost 5 years ago

14 questions

1. This is a partner test. I am assessing your understanding level of the material we have covered.
2. The test should be done with only the assistance of your notes, class slide decks or the posted Ch. 9 & 10 slide decks and your partner. You should not request or accept the assistance of a friend, family member or neighbor. Submitting answers and/or work done by or with the assistance of someone else is grounds for an Academic Integrity write-up.

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4

Draggable item		Corresponding Item

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Explain your Statistical Question answer to #2.

4

You have probably seen the mall interviewer, clipboard in hand, approaching people passing by.
Explain why even a large sample of mall shoppers would not provide a trustworthy estimate of the current unemployment rate in the city where the mall is located.

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How would you change the scenario to avoid the type of bias you chose in #8?

4

Explain why the sampling method in #10 is biased?
Is 68% likely to be too high an estimate or too low?
Explain why.

4

Explain how Luke can avoid the bias described in #11 and create a more representative sample of AHHS students.

4

The school's newspaper is planning an article on family friendly palces to stay over spring break at a nearby beach town. The editors intend to call 4 randomly chosen hotels to ask about their amenities for families with children. They have an alphabetized list of 28 hotels in the town.
Describe how to select an SRS of 4 hotels using slips of paper.

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The school's newspaper is planning an article on family friendly palces to stay over spring break at a nearby beach town. The editors intend to call 4 randomly chosen hotels to ask about their amenities for families with children. They have an alphabetized list of 28 hotels in the town.
Describe how to select an SRS of 4 hotels using a random number generator.

1. This is a partner test. I am assessing your understanding level of the material we have covered.
2. The test should be done with only the assistance of your notes, class slide decks or the posted Ch. 9 & 10 slide decks and your partner. You should not request or accept the assistance of a friend, family member or neighbor. Submitting answers and/or work done by or with the assistance of someone else is grounds for an Academic Integrity write-up.

After reading the text above, select your response.

To be clear, selecting "No" does not free you of the consequences of your actions. Rather, it means I will disable your test until we can talk one-on-one so that you better understand before proceeding.

I understand and accept the above statements #1 & 2

I do not understand and accept the above statemetnts #1 & 2

Determine if each of the following is a valid statistical question.

Draggable item		Corresponding Item
How much money does Mrs. Nosal carry with her to school?		Statistical Question.
How much money do high-school students at AHHS carry with them to school?		Nonstatistical question.

Explain your Statistical Question answer to #2.

A furniture maker busy hardwood in large batches. They supplier is supposed to dry the wood before shipping. The furniture maker chooses 5 pieces of wood from each batch the comes in a shipment and tests their moisture content.
If any piece exceeds 12% moisture content, the entire batch is sent back.
Identify the population and the sample in this context.

The sample is all the wood in one of the batches.

The population is the 5 pieces of wood from each batch.

The population is all the wood in the shipment.

The sample is the 5 pieces of wood from each batch.

The population is all the wood in one of the batches.

The sample is all the wood in the shipment.

An educator wants to compare the effectiveness of computer software for teaching biology with that of a textbook presentation.
She gives a biology pretest to each group ofhigh school juniors, then randomly divides them into two groups.
One group uses the computer and the other group studies the text. At the end of the year, she tests all the students again and compares the increase in biology test scores in the two groups.
Is this an observational study or an experiment?
Explain your reasoning.

If it is an observational study, is it retrospective or prospective?

Select BOTH answers.

Experimental Study

Subjects are identified and then observed to see changes as they occur.

Restrospective Observational Study

Subjects are randomly assigned treatment and a factor is manipulated.

Prospective Observational Study

Subjects are identified and then histories are observed to compare differences.

You have probably seen the mall interviewer, clipboard in hand, approaching people passing by.
Explain why even a large sample of mall shoppers would not provide a trustworthy estimate of the current unemployment rate in the city where the mall is located.

Using the information from #6, is the proportion of unemployed people in the sample likely greater than or less than the proportion of all people who are unemployed in the city?

Less than, the unemployed people are hanging out at the mall since they don't have a job.

Greater than, the unemployed people are hanging out at the mall since they don't have a job.

Greater than, the unemployed people don't have money to spend, they are looking for a job.

Less than, the unemployed people don't have money to spend, they are looking for a job.

What type of bias is primarily present in the Mall Scenario of #6?

Voluntary Response Bias

Response Bias

Nonresponse Bias

Undercoverage Bias

How would you change the scenario to avoid the type of bias you chose in #8?

Luke wants to know what percent of students at AHHS have a driver's license. He surveys all the students in his statistics class and finds that 68% of the students in his sample have a driver's license.
What kind of a sample is this?

Explain why the sampling method in #10 is biased?
Is 68% likely to be too high an estimate or too low?
Explain why.

Explain how Luke can avoid the bias described in #11 and create a more representative sample of AHHS students.

The school's newspaper is planning an article on family friendly palces to stay over spring break at a nearby beach town. The editors intend to call 4 randomly chosen hotels to ask about their amenities for families with children. They have an alphabetized list of 28 hotels in the town.
Describe how to select an SRS of 4 hotels using slips of paper.

The school's newspaper is planning an article on family friendly palces to stay over spring break at a nearby beach town. The editors intend to call 4 randomly chosen hotels to ask about their amenities for families with children. They have an alphabetized list of 28 hotels in the town.
Describe how to select an SRS of 4 hotels using a random number generator.

After reading the text above, select your response.

To be clear, selecting "No" does not free you of the consequences of your actions. Rather, it means I will disable your test until we can talk one-on-one so that you better understand before proceeding.

I understand and accept the above statements #1 & 2

I do not understand and accept the above statemetnts #1 & 2

Determine if each of the following is a valid statistical question.

How much money does Mrs. Nosal carry with her to school?

Statistical Question.

How much money do high-school students at AHHS carry with them to school?

Nonstatistical question.

A furniture maker busy hardwood in large batches. They supplier is supposed to dry the wood before shipping. The furniture maker chooses 5 pieces of wood from each batch the comes in a shipment and tests their moisture content.
If any piece exceeds 12% moisture content, the entire batch is sent back.
Identify the population and the sample in this context.

The sample is all the wood in one of the batches.

The population is the 5 pieces of wood from each batch.

The population is all the wood in the shipment.

The sample is the 5 pieces of wood from each batch.

The population is all the wood in one of the batches.

The sample is all the wood in the shipment.

An educator wants to compare the effectiveness of computer software for teaching biology with that of a textbook presentation.
She gives a biology pretest to each group ofhigh school juniors, then randomly divides them into two groups.
One group uses the computer and the other group studies the text. At the end of the year, she tests all the students again and compares the increase in biology test scores in the two groups.
Is this an observational study or an experiment?
Explain your reasoning.

If it is an observational study, is it retrospective or prospective?

Select BOTH answers.

Experimental Study

Subjects are identified and then observed to see changes as they occur.

Restrospective Observational Study

Subjects are randomly assigned treatment and a factor is manipulated.

Prospective Observational Study

Subjects are identified and then histories are observed to compare differences.

Using the information from #6, is the proportion of unemployed people in the sample likely greater than or less than the proportion of all people who are unemployed in the city?

Less than, the unemployed people are hanging out at the mall since they don't have a job.

Greater than, the unemployed people are hanging out at the mall since they don't have a job.

Greater than, the unemployed people don't have money to spend, they are looking for a job.

Less than, the unemployed people don't have money to spend, they are looking for a job.

What type of bias is primarily present in the Mall Scenario of #6?

Voluntary Response Bias

Response Bias

Nonresponse Bias

Undercoverage Bias

Luke wants to know what percent of students at AHHS have a driver's license. He surveys all the students in his statistics class and finds that 68% of the students in his sample have a driver's license.
What kind of a sample is this?

SRS

Stratified Random Sample

Cluster Sample

Systematic Sample

Convenience sample

Ch. 9 & 10 Partner Test- SPA

Ch. 9 & 10 Partner Test- SPA

Explain your Statistical Question answer to #2.

You have probably seen the mall interviewer, clipboard in hand, approaching people passing by.Explain why even a large sample of mall shoppers would not provide a trustworthy estimate of the current unemployment rate in the city where the mall is located.

How would you change the scenario to avoid the type of bias you chose in #8?

Explain why the sampling method in #10 is biased?Is 68% likely to be too high an estimate or too low?Explain why.

Explain how Luke can avoid the bias described in #11 and create a more representative sample of AHHS students.

After reading the text above, select your response.To be clear, selecting "No" does not free you of the consequences of your actions. Rather, it means I will disable your test until we can talk one-on-one so that you better understand before proceeding.

Determine if each of the following is a valid statistical question.

Explain your Statistical Question answer to #2.

You have probably seen the mall interviewer, clipboard in hand, approaching people passing by.Explain why even a large sample of mall shoppers would not provide a trustworthy estimate of the current unemployment rate in the city where the mall is located.

Using the information from #6, is the proportion of unemployed people in the sample likely greater than or less than the proportion of all people who are unemployed in the city?

What type of bias is primarily present in the Mall Scenario of #6?

How would you change the scenario to avoid the type of bias you chose in #8?

Luke wants to know what percent of students at AHHS have a driver's license. He surveys all the students in his statistics class and finds that 68% of the students in his sample have a driver's license.What kind of a sample is this?

Explain why the sampling method in #10 is biased?Is 68% likely to be too high an estimate or too low?Explain why.

Explain how Luke can avoid the bias described in #11 and create a more representative sample of AHHS students.

You have probably seen the mall interviewer, clipboard in hand, approaching people passing by.
Explain why even a large sample of mall shoppers would not provide a trustworthy estimate of the current unemployment rate in the city where the mall is located.

Explain why the sampling method in #10 is biased?
Is 68% likely to be too high an estimate or too low?
Explain why.

After reading the text above, select your response.

To be clear, selecting "No" does not free you of the consequences of your actions. Rather, it means I will disable your test until we can talk one-on-one so that you better understand before proceeding.

You have probably seen the mall interviewer, clipboard in hand, approaching people passing by.
Explain why even a large sample of mall shoppers would not provide a trustworthy estimate of the current unemployment rate in the city where the mall is located.

Luke wants to know what percent of students at AHHS have a driver's license. He surveys all the students in his statistics class and finds that 68% of the students in his sample have a driver's license.
What kind of a sample is this?

Explain why the sampling method in #10 is biased?
Is 68% likely to be too high an estimate or too low?
Explain why.