Two Variable Statistics Retake

Last updated almost 6 years ago

10 questions

Library

Two Variable Statistics Retake

Last updated almost 6 years ago

10 questions

Question 1

What percent of students with a 4.0 average play soccer? (Please write it as a percent and round to the nearest whole number)

Question 2

What proportion of soccer players have a 4.0 average?

Question 3

Which scatterplot shows the weakest linear association (r value closer to 0)? Explain your choice.

Question 4

Which scatterplot shows a strong linear association (r value close to 1 or -1)? Explain your choice.

Question 5

Select all TRUE statements based off the image above.

The y-intercept (from the line of best fit) indicates that a reaction time would be 0 for a person who is about 43 years old.

Reaction time tends to decrease as the age increases.

The correlation looks close to -1, so there is no association between age and reaction time.

The line of best fit indicates that, in general, the reaction time for a 21-year-old should be, on average, about 9.25 milliseconds less than the reaction time for a 20-year-old.

Question 6

The data in the graph above suggest a linear association. Which of the functions best represents the equation of the line of best fit?

y = -30x + 100

y = 30x + 159

y = x + 100

y = 0.01x + 152

Question 7

Interpret the slope of the equation you just selected above.

You can use this template to help you if needed:
As the (x-axis) increases by 1, the (y-axis) increases/decreases by (slope).

Question 8

Use the given linear model y= 1.5x + 108 to predict what the noise level would be if 60 people attended.

Question 9

Explain the meaning of the slope of the line in context.

Question 10

10.

Describe the correlation between the variables as either strong or weak and as either positive or negative. Explain your reasoning.

Question 1

What percent of students with a 4.0 average play soccer? (Please write it as a percent and round to the nearest whole number)

Question 2

What proportion of soccer players have a 4.0 average?

Question 3

Which scatterplot shows the weakest linear association (r value closer to 0)? Explain your choice.

Question 4

Which scatterplot shows a strong linear association (r value close to 1 or -1)? Explain your choice.

Question 5

Select all TRUE statements based off the image above.

The y-intercept (from the line of best fit) indicates that a reaction time would be 0 for a person who is about 43 years old.

Reaction time tends to decrease as the age increases.

The correlation looks close to -1, so there is no association between age and reaction time.

The line of best fit indicates that, in general, the reaction time for a 21-year-old should be, on average, about 9.25 milliseconds less than the reaction time for a 20-year-old.

Question 6

The data in the graph above suggest a linear association. Which of the functions best represents the equation of the line of best fit?

y = -30x + 100

y = 30x + 159

y = x + 100

y = 0.01x + 152

Question 7

Interpret the slope of the equation you just selected above.

You can use this template to help you if needed:
As the (x-axis) increases by 1, the (y-axis) increases/decreases by (slope).

Question 8

Use the given linear model y= 1.5x + 108 to predict what the noise level would be if 60 people attended.

Question 9

Explain the meaning of the slope of the line in context.

Question 10

10.

Two Variable Statistics Retake

Two Variable Statistics Retake

What percent of students with a 4.0 average play soccer? (Please write it as a percent and round to the nearest whole number)

What proportion of soccer players have a 4.0 average?

Which scatterplot shows the weakest linear association (r value closer to 0)? Explain your choice.

Which scatterplot shows a strong linear association (r value close to 1 or -1)? Explain your choice.

Select all TRUE statements based off the image above.

The data in the graph above suggest a linear association. Which of the functions best represents the equation of the line of best fit?

Interpret the slope of the equation you just selected above. You can use this template to help you if needed:As the ________ (x-axis) increases by 1, the __________ (y-axis) increases/decreases by ______ (slope).

Use the given linear model y= 1.5x + 108 to predict what the noise level would be if 60 people attended.

Explain the meaning of the slope of the line in context.

Describe the correlation between the variables as either strong or weak and as either positive or negative. Explain your reasoning.

What percent of students with a 4.0 average play soccer? (Please write it as a percent and round to the nearest whole number)

What proportion of soccer players have a 4.0 average?

Which scatterplot shows the weakest linear association (r value closer to 0)? Explain your choice.

Which scatterplot shows a strong linear association (r value close to 1 or -1)? Explain your choice.

Select all TRUE statements based off the image above.

The data in the graph above suggest a linear association. Which of the functions best represents the equation of the line of best fit?

Interpret the slope of the equation you just selected above. You can use this template to help you if needed:As the ________ (x-axis) increases by 1, the __________ (y-axis) increases/decreases by ______ (slope).

Use the given linear model y= 1.5x + 108 to predict what the noise level would be if 60 people attended.

Explain the meaning of the slope of the line in context.

Describe the correlation between the variables as either strong or weak and as either positive or negative. Explain your reasoning.

Interpret the slope of the equation you just selected above.

You can use this template to help you if needed:
As the (x-axis) increases by 1, the (y-axis) increases/decreases by (slope).

Interpret the slope of the equation you just selected above.

You can use this template to help you if needed:
As the (x-axis) increases by 1, the (y-axis) increases/decreases by (slope).