Question 1

Use the following to answer the questions below:
The states located in the Midwestern region of the country typically experience a large number of tornados every year. The number of tornadoes from 2000-2011 for four Midwestern states (Kansas, Nebraska, South Dakota, and Iowa) are displayed in the side-by-side boxplots.
 
-(58, 88, 94, 133, 185) is the five number summary for which state?

Accepted Answer

The answer of Use the following to answer the questions...

Question 2

Use the following to answer the questions below:
Identify which graphical display might be appropriate in each case. Select all that apply.
-Investigate the number of Facebook friends students in your class have.

Accepted Answer

The answer of Use the following to answer the questions...

Question 3

Use the following to answer the questions below:
Identify which graphical display might be appropriate in each case. Select all that apply.
-Compare the number of points scored for all games played in a season for all football teams in the Big 10 conference.

Accepted Answer

The answer of Use the following to answer the questions...

Question 4

Use the following to answer the questions below:
Identify which graphical display might be appropriate in each case. Select all that apply.
-Investigate the relationship between pulse rate (in beats per minute) and systolic blood pressure (the top number in a blood pressure reading, measured in   of mercury) for patients at the student health center.

Accepted Answer

The answer of Use the following to answer the questions...

Question 5

Use the following to answer the questions below:
Identify which graphical display might be appropriate in each case. Select all that apply.
-Investigate the favorite type of music (country, rock, classical, etc.) for the students in your class.

Accepted Answer

The answer of Use the following to answer the questions...

Question 6

Use the following to answer the questions below:
Identify which graphical display might be appropriate in each case. Select all that apply.
-Compare the percentage of people in favor of Barack Obama and Mitt Romney in the 2012 Presidential election for the different regions in the U.S. (Northeast, Southeast, Midwest, West).

Accepted Answer

A side-by-side bar chart or a segmented bar chart would be appropriate for comparing the percentage of people in favor of Barack Obama and Mitt Romney in the 2012 Presidential election for the different regions in the U.S. (Northeast, Southeast, Midwest, West).

Question 7

Use the following to answer the questions below:
Identify which graphical display might be appropriate in each case. Select all that apply.
-Investigate the relationship between the length of the right foot (in cm) and the length of the right forearm (in cm) for students in your class.

Accepted Answer

A scatterplot is appropriate for investigating the relationship between two quantitative variables, such as the length of the right foot and the length of the right forearm.

Question 8

Use the following to answer the questions below:
Identify which graphical display might be appropriate in each case. Select all that apply.
-Investigate the length of songs on your iPod.

Accepted Answer

A histogram and a dotplot are appropriate for displaying the distribution of a single quantitative variable, such as the length of songs.

Question 9

Use the following to answer the questions below:
Identify which graphical display might be appropriate in each case. Select all that apply.
-Investigate the number of text messages sent yesterday by students in your class.

Accepted Answer

A histogram or a dotplot would be appropriate for displaying the distribution of a single quantitative variable, such as the number of text messages sent by students.

Question 10

Use the following to answer the questions below:
Identify which graphical display might be appropriate in each case. Select all that apply.
-Investigate the relationship between gender and left/right handedness for students in the class.

Accepted Answer

A side-by-side bar chart or a segmented bar chart would be appropriate for investigating the relationship between categorical variables like gender and handedness.

Question 11

Use the following to answer the questions below:
Identify which graphical display might be appropriate in each case. Select all that apply.
-Investigate the relationship between the number of hours of exercise per week and athlete or not for a sample of students at a small university.

Accepted Answer

The answer of Use the following to answer the questions...

Question 12

Use the following to answer the questions below:
Match the correlation to the corresponding scatterplot.
 
-________ 0.719

Accepted Answer

The answer of Use the following to answer the questions...

Question 13

Use the following to answer the questions below:
Match the correlation to the corresponding scatterplot.
 
-________ -0.064

Accepted Answer

The answer of Use the following to answer the questions...

Question 14

Use the following to answer the questions below:
Match the correlation to the corresponding scatterplot.
 
-________ 0.889

Accepted Answer

The answer of Use the following to answer the questions...

Question 15

Use the following to answer the questions below:
Match the correlation to the corresponding scatterplot.
 
-________ -0.701

Accepted Answer

The answer of Use the following to answer the questions...

Question 16

Use the following to answer the questions below:
A student working an independent research project wants to investigate if there is an association between the amount of sleep someone gets and their body mass index (BMI) - an indicator of body fatness. For a sample of 45 students, she records their BMI and the average amount of sleep they get on weeknights over a two-week period.
-What would it mean for average amount of sleep and BMI to be positively correlated?

Accepted Answer

The answer of Use the following to answer the questions...

Question 17

Use the following to answer the questions below:
A student working an independent research project wants to investigate if there is an association between the amount of sleep someone gets and their body mass index (BMI) - an indicator of body fatness. For a sample of 45 students, she records their BMI and the average amount of sleep they get on weeknights over a two-week period.
-What would it mean for average amount of sleep to be negatively correlated with BMI?

Accepted Answer

The answer of Use the following to answer the questions...

Question 18

Use the following to answer the questions below:
A student working an independent research project wants to investigate if there is an association between the amount of sleep someone gets and their body mass index (BMI) - an indicator of body fatness. For a sample of 45 students, she records their BMI and the average amount of sleep they get on weeknights over a two-week period.
-Suppose the student found a correlation of -0.413 between amount of sleep and BMI. Would it be appropriate for her to conclude that getting more sleep causes individuals to have a lower BMI?

Accepted Answer

No, because correlation does not imply causation.

Question 19

Use the following to answer the questions below:
The scatterplot shows the relationship between GPA and the number of Facebook friends for 30 students in a class.
 
-Discuss the information contained in the scatterplot. What does it mean about GPA and number of Facebook friends?

Accepted Answer

The answer of Use the following to answer the questions...

Question 20

Use the following to answer the questions below:
The scatterplot shows the relationship between GPA and the number of Facebook friends for 30 students in a class.
 
-For each corner of the scatterplot (top left, top right, bottom left, bottom right), describe a student whose responses place him or her in that corner.

Accepted Answer

The answer of Use the following to answer the questions...

Quiz 2: Describing Data

Use the following to answer the questions below: Identify which graphical display might be appropriate in each case. Select all that apply. -Investigate the number of Facebook friends students in your class have.

Use the following to answer the questions below: Identify which graphical display might be appropriate in each case. Select all that apply. -Compare the number of points scored for all games played in a season for all football teams in the Big 10 conference.

Use the following to answer the questions below: Identify which graphical display might be appropriate in each case. Select all that apply. -Investigate the favorite type of music (country, rock, classical, etc.) for the students in your class.

Use the following to answer the questions below: Identify which graphical display might be appropriate in each case. Select all that apply. -Investigate the relationship between the length of the right foot (in cm) and the length of the right forearm (in cm) for students in your class.

Use the following to answer the questions below: Identify which graphical display might be appropriate in each case. Select all that apply. -Investigate the length of songs on your iPod.

Use the following to answer the questions below: Identify which graphical display might be appropriate in each case. Select all that apply. -Investigate the number of text messages sent yesterday by students in your class.

Use the following to answer the questions below: Identify which graphical display might be appropriate in each case. Select all that apply. -Investigate the relationship between gender and left/right handedness for students in the class.

Use the following to answer the questions below: Identify which graphical display might be appropriate in each case. Select all that apply. -Investigate the relationship between the number of hours of exercise per week and athlete or not for a sample of students at a small university.

Use the following to answer the questions below: Match the correlation to the corresponding scatterplot. -________ 0.719

Use the following to answer the questions below: Match the correlation to the corresponding scatterplot. -________ -0.064

Use the following to answer the questions below: Match the correlation to the corresponding scatterplot. -________ 0.889

Use the following to answer the questions below: Match the correlation to the corresponding scatterplot. -________ -0.701

Use the following to answer the questions below: The scatterplot shows the relationship between GPA and the number of Facebook friends for 30 students in a class. -Discuss the information contained in the scatterplot. What does it mean about GPA and number of Facebook friends?