Introduction to Scatterplots and Correlation

What type of correlation is when one value is increasing, then the other value is decreasing?

• postive

• negative

• none

• cannot be determined

Estimate the value of r:

• -0.7

• 0.35

• 0.89

• -0.95

What is the range of values for the correlation coefficient "r"?

• -1 to 0

• -1 to 1

• 0 to 1

• -2 to 2

Estimate the value of r:

• -0.36

• -0.83

• 0.99

• 0.65

Estimate the value of r:

• 0.95

• -0.91

• 0.02

• -0.38

What type of correlation describes the following sentence:
The number of people that go the pool and the temperature outside.

• positive

• negative

• none

• cannot be determined

Estimate the value of r:

• 0.83

• 0.10

• -0.75

• -0.92

What type of association does this graph have?

• positive

• negative

• none

• all of the above

Which graph best shows a positive correlation between the number of hours studied and the test scores?

• Graph A

• Graph B

• Graph C

• Graph D

What type of association does this graph have?

• positive 

• negative

• none

• all of the above