Quiz about Scatterplot Correlation Coefficients and Line of Best Fit

Question 1

What is the type of association?

Accepted Answer

no association

Answer

Negative

Answer

positive

Question 2

What type of association does this graph have?

Accepted Answer

negative

Answer

positive

Answer

none

Answer

all of the above

Question 3

What type of association does this graph have?

Accepted Answer

positive

Answer

negative

Answer

none

Answer

all of the above

Question 4

What type of correlation is the scatter plot?

Accepted Answer

Negative Correlation

Answer

Positive Correlation

Answer

No Correlation

Answer

Undefined Correlation

Question 5

What type of association is the scatter plot?

Accepted Answer

Negative Association

Answer

Positive Association

Answer

No Association

Answer

Undefined Association

Question 6

What type of association is the scatter plot?

Accepted Answer

Positive Association

Answer

Negative Association

Answer

No Association

Answer

Undefined Association

Question 7

What type of association is the scatter plot?

Accepted Answer

No Association

Answer

Positive Association

Answer

Negative Association

Answer

Undefined Association

Question 8

What type of correlation is the scatter plot?

Accepted Answer

Positive Correlation

Answer

Negative Correlation

Answer

No Correlation

Answer

Undefined Correlation

Question 9

What would the correlation be between math grades and the time it takes to run a mile ?

Accepted Answer

No Correlation

Answer

Postive Correlation

Answer

Negative Correlation

Answer

Cannot Be Determined

Question 10

What type of correlation (association)?
The outside temperature and the amount of layers you wear.

Accepted Answer

Negative correlation

Answer

Positive correlation

Answer

No correlation

Question 11

The number of siblings you have and your weight.

Accepted Answer

No correlation

Answer

Positive correlation

Answer

Negative correlation

Question 12

JoBeth draws a scatter plot that shows as the outside temperature increases, sales at her lemonade stand increase. Which best describes the scatter plot?

Accepted Answer

The points show that as x-values increase, y-values increase.

Answer

The points show that as x-values increase, y-values decrease.

Answer

The points show that as x-values decrease, y-values stay the same.

Answer

The points show that as x-values decrease, y-values increase.

Question 13

Which statement best describes the relationship between time shopping online and the number of stores visited?

Accepted Answer

As the number of hours increases, the number of stores increases.

Answer

As the number of hours increases, the number of stores decreases.

Answer

The number of hours and the number of stores are about the same.

Answer

As the number of hours decreases, the number of stores increases.

Question 14

Molly collected data about the number of hours students studied and their scores on a test. The results are shown in the scatter plot. Which statement about the data is true?

Accepted Answer

As study hours increase, test scores increase.

Answer

As study hours increase, test scores decrease.

Answer

As study hours increase, test scores stay the same.

Answer

As study hours decrease, test scores increase.

Question 15

Which relationship could be represented by this scatter plot?

Accepted Answer

As the number of daylight hours increases, the number of night hours decreases.

Answer

As the number of muffins in a box increases, the price increases.

Answer

As the speed of a car increases, the distance the car travels increases.

Answer

As the population of a city increases, the number of schools in the

city increases.

Question 16

Which scatter plot show a positive relationship?

Accepted Answer

Graph C

Answer

Graph A

Answer

Graph B

Answer

Graph D

Question 17

Based on the scatterplot, which of the following conclusions about the relationship between her height and weight is true?

Accepted Answer

There is a positive relationship between height and weight

Answer

There is a negative relationship between height and weight

Answer

There is a constant relationship between height and weight

Answer

There is no relationship between height and weight

Question 18

The number of siblings you have and your weight.

Accepted Answer

No correlation

Answer

Positive correlation

Answer

Negative correlation

Answer

All of the above

Question 19

As x increases, y increases

Accepted Answer

positive correlation

Answer

correlation coefficient

Answer

causation

Answer

negative correlation

Question 20

What is a scatter plot?

Accepted Answer

A graph that shows the relationship of two data sets.

Answer

A graph drawn using rectangular bars to show how large each value is.

Answer

A graph that shows information that is connected in some way.

Answer

A graph that shows data changing over time.

Question 21

You are analyzing a scatter plot that has a negative correlation. What is true of the of the x and y values?

Accepted Answer

As x increases, y decreases

Answer

As x increases, y increases

Answer

As x decreases, y decreases

Question 22

The scatter plot shows the relationship between the number of chapters and the total number of pages for several books. Use the trend line to predict how many chapters would be in a book with 180 pages.

Accepted Answer

18 chapters

Answer

12 chapters

Answer

15 chapters

Answer

21 chapters

Question 23

Find the slope for the trend line using points (2,2) and (4,3)

Accepted Answer

1/2

Answer

2

Answer

-2

Answer

-1/2

Question 24

Which of the following lines represents the line of best fit for the scatter plot?

Accepted Answer

C

Answer

A

Answer

B

Answer

D

Question 25

If the line of best fit is given, y = 31.45x - 242.3, where x represents hours and y represents income...

Determine the predicted income if 22 hours were worked on an assembly job.

Accepted Answer

$449.60

Answer

$207.30

Answer

$691.90

Answer

$543.30

Question 26

Caroline weighs her new puppy every month to see how much it has grown. If age is a and weight is W, which of these is the correct equation for the line of best fit?

Accepted Answer

W = 3.6a + 8.9

Answer

W = 3.6 + 8.9

Answer

a = 8.9W + 3.6

Answer

W = 8.9a + 3.6

Question 27

In the equation y=3x-5, what is the value of the y-intercept?

Accepted Answer

-5

Answer

3

Answer

-3/5

Answer

-2

Question 28

Click on Image. (Use the orange points to find your equation.)

Accepted Answer

y = 5/6 x + 1

Answer

y = x + 5/6

Answer

y = x + 1

Answer

y = 6/5 x + 1

Question 29

What is the equation of the line of best fit? (Use the bold black points to find your equation.)

Accepted Answer

y = -25x + 170

Answer

y = -5/8x + 170

Answer

y = 25x + 170

Answer

y = 5/8x + 170

Scatterplot Correlation Coefficients and Line of Best Fit

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