Correlation Coefficient Practice

Which regression type would give you an r and r² value?

• linear regression

• quadratic regression

• exponential regression

Tags

CCSS.HSS.ID.C.8

r² is known as the ​​ (a)  

r is known as the ​ (b)  

• coefficient of determination
• correlation coefficient

Tags

R vs R^2

What's true about r and r²?

r² measures ​ ​ (a)  

r measures ​ (b)  

• how well a function fits the data
• linearity

Tags

R vs R^2

What's true about r and r²?

​ (a)   have an r² value

​ (b)   have an r value

• All function types
• Only linear functions

Tags

R vs R^2

Match the following

• Positive, Linear Correlation

• 
• Non-linear Correlation

• 
• No Correlation

• 
• Negative, Linear Correlation

• 

Tags

CCSS.HSA.CED.A.2

CCSS.HSA.REI.D.10

CCSS.HSA.REI.D.11

What is most likely the correlation coefficient for this data set?

• r = -0.20

• r = -0.70

• r = 0.83

• r = 1.00

Tags

CCSS.HSS.ID.C.8

Order the scatterplots from STRONGEST to WEAKEST correlation coefficients

• 
• 
• 
• 

Tags

CCSS.HSS.ID.C.8

Derrick thinks playing video games results in him doing more work. His roommate thinks otherwise

Calculate the correlation coefficient, r, of the data set. Round to THREE decimal places.

Mathematical Equivalence

ON

Tags

CCSS.HSS.ID.C.8

Order the correlation coefficients from STRONGEST linear relationship to WEAKEST

• 0.45

• 0.80

• -0.50

• -0.89

Tags

CCSS.HSS.ID.B.5

To convince his students to slow down, Coach Logan tracks the typing speed and the number of errors made from a few of his students.

Calculate the correlation coefficient, r, of the data set. Round to THREE decimal places.

Mathematical Equivalence

ON

Tags

CCSS.HSS.ID.B.6

CCSS.HSS.ID.C.8