Correlation Coefficient

The correlation coefficient is a number "r" such that: 

• -1<r<1
• -1>r>1
• -1≤r≤1
• -1≥r≤1

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.C.8

CCSS.HSS.ID.B.6

CCSS.HSS.ID.C.7

What type of association does this graph have?

• positive
• negative
• none
• all of the above

Tags

CCSS.HSF-LE.A.1B

What type of correlation does this graph show?

• A) Positive

• B) negative

• C) none

• D) all of the above

Tags

CCSS.HSS.ID.C.8

CCSS.HSS.ID.B.6

Describe the correlation in the graph shown.

• A) Strong Negative

• B) Strong Positive

• C) Weak Negative

• D) No Correlation

Tags

CCSS.HSF-LE.A.1B

Describe the relationship between the variables.

• A) Weak negative correlation

• B) Moderate negative correlation

• C) Moderate positive correlation

• D) Strong negative correlation

Tags

CCSS.HSS.ID.C.8

CCSS.HSS.ID.B.6

Number of steps taken per day and number of kilometers walked per day.  $r=.92$  

• strong positive

• strong negative

• weak positive

• weak negative

Tags

CCSS.HSS.ID.C.8

CCSS.HSS.ID.B.6

Car weight and distance traveled using a full tank of gas.  $r=-.86$  

• strong positive

• strong negative

• weak positive

• weak negative

Tags

CCSS.HSS.ID.C.8

CCSS.HSS.ID.B.6

Score on science exam and number of words written on the essay question.  $r=.28$  

• strong positive

• strong negative

• weak positive

• weak negative

Tags

CCSS.HSS.ID.C.8

CCSS.HSS.ID.B.6

Estimate the correlation coefficient for this scatterplot.

• A) r = -0.9

• B) r = 1

• C) r = 0.9

• D) r = -1

Tags

CCSS.HSS.ID.C.8

CCSS.HSS.ID.B.6