12/7/23

What type of association does this graph have?

• positive

• negative

• none

• all of the above

What type of association is represented by the scatter plot

• Positive

• Negative

• None

Estimate the correlation coefficient for this scatterplot.

• A) r = 1.2

• B) r = 0.89

• C)r = 0

• D) r = -0.89

Describe a correlation with a coefficient of r=0.3

• Strong positive

• Weak positive

• Strong negative

• Weak negative

Which scatter plot diagram shows the strongest positive correlation?

• 
• 
• 
• 

Which correlation coefficient (r) best represents the graph?

• r = -1

• r = 0

• r = 1.4

• r = 1

Part A: Using the model y = Ax + B, compute the regression equation for the data in the table.

Round to the nearest hundredth (2 decimal places). Do not put spaces when typing in your answer.

Part B: Compute the correlation coefficient.

Round to the nearest hundredth (2 decimal places). Do not put spaces when typing in your answer.

Part C: Complete the statement about the correlation coefficient using the words "weak, moderate, or strong" and "positive or negative".

There is a _____________ __________ linear association.

• weak

• moderate

• strong

• positive

• negative

Part A: Using the model y = Ax + B, compute the regression equation for the data in the table.

Round to the nearest hundredth (2 decimal places). Do not put spaces when typing in your answer.