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Correlation on a Graph

Total questions: 20

Worksheet time: 20mins

Name
Class
Date
1.

What type of correlation does this graph have?

a)

positive

b)

negative

c)

none

d)

all of the above

2.

Which sentence describes the relationship shown on this scatter plot?

a)

As the temperature decreases, the visitors increase.

b)

As the temperature increases, the number of visitors increases.

c)

As the visitors increase, the temperature decreases.

d)

No correlation

3.

When the data closely resembles a line

a)

Strong Correlation

b)

Weak Correlation

c)

No Correlation

d)

Correlation

4.

Based on the graph, if Joe earned $400, how many hours did he work?

a)

25 hours

b)

35 hours

c)

45 hours

d)

15 hours

5.

The correlation coefficient of the regression line is 0.986. What does that mean?

a)

There is a very strong, positive correlation between the variables.

b)

There is a very strong, negative correlation between the variables.

c)

There is a weak, negative correlation between the variables.

d)

As fork length increases, so does total length.

6.

Given that the scatter diagram has a product moment correlation coefficient of 0.9, what can you conclude?

a)

There is a weak negative linear correlation between x and y

b)

There is a strong negative linear correlation between x and y

c)

There is a strong positive linear correlation between x and y

d)

There is a weak positive linear correlation between x and y

7.

The correlation coefficient of this graph is closest to:

a)

0.97

b)

0.75

c)

-0.98

d)

0.48

8.

Determine the correlation coefficient of the given data.

a)

- .5477

b)

.1770

c)

.8956

d)

- .9463

9.

As x increases, y increases

a)

correlation coefficient

b)

causation

c)

positive correlation

d)

negative correlation

10.

What is a scatter plot?

a)

A graph that shows the relationship of two data sets.

b)

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

c)

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

d)

A graph that shows data changing over time.

11.

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

a)

A

b)

B

c)

C

d)

D

12.

A connection between two or more things

a)

Correlation

b)

Linear

c)

Trend Line

d)

Scatter Plot

13.

As x increases, y decreases

a)

Postive Correlation

b)

Negative Correlation

c)

No Correleation

d)

Trend Line

14.

The data slightly resembles a line but is more spread out

a)

Strong Correlation

b)

Weak Correlation

c)

No Correlation

d)

Correlation

15.

A line drawn in a scatter plot to fit most of the dots and

shows the relationship between the two sets of data

a)

Association

b)

Causation

c)

Line of Best Fit

d)

Linear Regression

16.

The measure of the strength and direction of a linear relationship

a)

Interpolation

b)

Extrapolation

c)

Correlations Coefficient

d)

Residual

17.

What type of correlation does this graph have?

a)

Negative

b)

No Correlation

c)

positive

18.

What type of correlation does the graph show?

a)

Positive Correlation

b)

Negative Correlation

c)

No Correlation

19.

What type of correlation does the graph show?

a)

Positive Correlation

b)

Negative Correlation

c)

No Correlation

20.

Which graph depicts the strongest positive correlation?

a)
b)
c)
d)