2/18/2022-Unit 1-Test Collecting Data--free response sections

Last updated almost 3 years ago

15 questions

FREE RESPONSE

Required

Explain the relationship between a sample and a population.

SHORT ANSWER

FREE RESPONSE

2/18/2022-Unit 1-Test Collecting Data--free response sections

Last updated almost 3 years ago

15 questions

FREE RESPONSE

Required

Explain the relationship between a sample and a population.

SHORT ANSWER

USE THE FOLLOWING INFORMATION TO ANSWER THE QUESTIONS ON THE RIGHT:
A study of 20,000 men was conducted to find a link between high intakes of dairy products and prostate cancer.

Required

What is the explanatory variable?

Required

SHORT ANSWER

USE THE FOLLOWING INFORMATION TO ANSWER THE QUESTIONS ON THE RIGHT:

A random sample of 200 patients is taken from a large medical clinic to determine if taking an omega-3 fish oil tablet daily lowers cholesterol levels.  The patients are separated into groups by gender and then a blind study is administered, giving 1/2 of each group the fish oil and 1/2 of each group a placebo.  The study found that those who took the fish oil tablet lowered their cholesterol levels more than those who had taken the placebo.

Required

What is the exploratory variable?

Required

FREE RESPONSE

USE THE FOLLOWING INFORMATION TO ANSWER THE QUESTIONS ON THE RIGHT:

Juan conducted two different surveys about student transportation to school.  For Survey A, he stood at the entrance of the school at 7:30 a.m. and surveyed the first 80 students.  For Survey B, he used a random number generator to select 80 students in the school to survey.

Required

Describe the sampling technique in survey A.

Required

Describe the sampling technique in survey B.

Required

FREE RESPONSE

USE THE FOLLOWING INFORMATION TO ANSWER THE QUESTIONS ON THE RIGHT:

Suppose a high school guidance counselor wants to find out the proportion of the students at his high school who have tried alcohol.  He sends out an email to 200 randomly chosen students and asks them if they have tried alcohol.  Of the 92 that responded, 6% said that they tried alcohol.

Required

Describe how NONRESPONSE bias might lead to bias in this survey.

Required

2/18/2022-Unit 1-Test Collecting Data--free response sections

Explain the relationship between a sample and a population.

2/18/2022-Unit 1-Test Collecting Data--free response sections

Explain the relationship between a sample and a population.

USE THE FOLLOWING INFORMATION TO ANSWER THE QUESTIONS ON THE RIGHT:

A study of 20,000 men was conducted to find a link between high intakes of dairy products and prostate cancer.

What is the explanatory variable?

USE THE FOLLOWING INFORMATION TO ANSWER THE QUESTIONS ON THE RIGHT:

What is the exploratory variable?

USE THE FOLLOWING INFORMATION TO ANSWER THE QUESTIONS ON THE RIGHT:

Describe the sampling technique in survey A.

Describe the sampling technique in survey B.

USE THE FOLLOWING INFORMATION TO ANSWER THE QUESTIONS ON THE RIGHT:

Describe how NONRESPONSE bias might lead to bias in this survey.

Describe how RESPONSE bias might lead to bias in this survey.

USE THE FOLLOWING INFORMATION TO ANSWER THE QUESTIONS ON THE RIGHT:

A study of 20,000 men was conducted to find a link between high intakes of dairy products and prostate cancer.

What is the explanatory variable?

What is the response variable?

What are the experimental units?

What is a possible confounding variable?

USE THE FOLLOWING INFORMATION TO ANSWER THE QUESTIONS ON THE RIGHT:

What is the exploratory variable?

What is the reponse variable?

What are the experimental units?

What is a possible confounding variable?

USE THE FOLLOWING INFORMATION TO ANSWER THE QUESTIONS ON THE RIGHT:

Describe the sampling technique in survey A.

Describe the sampling technique in survey B.

Identify which survey Juan should have more confidence in and explain why.

USE THE FOLLOWING INFORMATION TO ANSWER THE QUESTIONS ON THE RIGHT:

Describe how NONRESPONSE bias might lead to bias in this survey.

Describe how RESPONSE bias might lead to bias in this survey.

Is the sample proportion of 6% likely greater than or less than the actual proportion of the students at the school who have tired alcohol? Explain your answer.

What is the response variable?

What are the experimental units?

What is a possible confounding variable?

What is the reponse variable?

What are the experimental units?

What is a possible confounding variable?

Identify which survey Juan should have more confidence in and explain why.

Is the sample proportion of 6% likely greater than or less than the actual proportion of the students at the school who have tired alcohol? Explain your answer.