Correlation Coefficient

Determine the Correlation Coefficient and decide whether it is weak, moderate, or strong.

• 0.07 weak
• -0.26 weak
• -0.26 moderate
• 0.07 strong

Tags

CCSS.HSS.ID.C.7

CCSS.HSS.ID.C.8

Determine the Correlation Coefficient and decide whether it is weak, moderate, or strong.

• -0.19 weak
• -0.19 moderate
• 0.04 weak
• 0.04 strong

Tags

CCSS.HSS.ID.C.8

What type of association does this graph have?

• positive 
• negative
• none
• all of the above

Tags

CCSS.HSS.ID.B.6

CCSS.HSS.ID.C.7

CCSS.HSS.ID.C.8

What type of association does this graph have?

• positive
• negative
• none
• all of the above

Tags

CCSS.HSS.ID.B.6

CCSS.HSS.ID.C.8

The coefficient of determination tells us: 

• The correlation and all the things that go with it. 
• The answer to the question being asked.
• The percentage of data that is on the line of best fit.
• The equation to the line of best fit.

Tags

CCSS.HSS.ID.C.8

The coefficient of determination is a percentage "r²" such that:

• 0<r²<1
• -1<r²<1
• 0<r²<2
• -1<r²<0

Tags

CCSS.HSS.ID.C.8

r²= .24

• My data is not very accurate. We have a 76% uncertainty.
• My data is 24% correct.
• My data is flawed. I have 24% uncertainty.
• My data is very accurate. I have 76% accuracy.

Tags

CCSS.HSS.ID.C.8

r²= .83

• My data is very accurate. We have a 17% uncertainty.
• My data is 17% correct.
• My data is relatively strong. I have 83% accuracy.
• My data is very accurate. I have 17% accuracy.

Tags

CCSS.HSS.ID.C.8

r²= .46

• My data is very accurate. We have a 46% uncertainty.
• My data is 54% correct.
• My data is relatively strong. I have 54% accuracy.
• My data is flawed. I have 54% uncertainty.

Tags

CCSS.HSS.ID.B.6

CCSS.HSS.ID.C.8

CCSS.HSS.ID.C.9

What can we determine from the correlation coefficient? 

• Style + Type
• Percentage + Direction
• Strength + Direction
• Strength + Style

Tags

CCSS.HSS.ID.C.8