Correlation Coefficient

What type of association does this graph have?

• Strong Positive

• Weak Negative

• Weak Positive

• Strong Negative

Answer explanation

HINT:

Positive Correlation: Line goes up

Negative Correlation: Line goes down

No Correlation: Can't see a line

Tags

CCSS.HSS.ID.B.5

What type of association does this scatter plot represent?

• Positive Linear Association

• Negative Linear Association

• No Association

Answer explanation

HINT:

Positive Correlation: Line goes up

Negative Correlation: Line goes down

No Correlation: Can't see a line

Tags

CCSS.HSS.ID.B.5

Estimate the correlation coefficient

• r = 1

• r = -1

• r ≈ -0.8

• r ≈ 0.8

• r ≈ -0.5

Answer explanation

HINT:

Positive Correlation: Line goes up

Negative Correlation: Line goes down

The closer to zero you are, the weaker your line is.

Tags

CCSS.HSS.ID.C.8

Which scatter plot diagram shows the strongest positive correlation?

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Answer explanation

HINT:

Positive Correlation: Line goes up

Negative Correlation: Line goes down

The closer to zero you are, the weaker your line is.

Tags

CCSS.HSS.ID.B.5

Determine the Correlation Coefficient (r) of the situation.

Round to the hundredths place (two decimal places)

Answer explanation

HINT: Use stat edit (4:LinReg). Make sure your diagnostics are on!

Tags

CCSS.HSS.ID.C.8

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

Estimate the correlation coefficient for this scatterplot.

• A) r = 1.2

• B) r = 0.89

• C)r = 0

• D) r = -0.89

Tags

CCSS.HSS.ID.C.8

Find Pearson's Correlation Coefficient for the data in the table.

• r = -0.19

• r = 0.04

• r = -0.17

• r = 6.47

Tags

CCSS.HSS.ID.C.8

A perfect negative correlation has a correlation coefficient of ____. 

• 1
• -1
• 0

Tags

CCSS.HSS.ID.B.5

Which graph represents data that has a correlation coefficient close to -1?

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• 
• 

Tags

CCSS.HSS.ID.C.8