Unit 7 Day 2 Practice Scatter plot, r and LinReg

Describe the correlation in the graph shown.

• Strong Negative
• Strong Positive
• Weak Negative
• Weak Positive

Tags

CCSS.HSS.ID.B.5

r=0.3

• Strong positive 
• Weak positive
• Strong negative
• Weak negative 

Tags

CCSS.HSS.ID.B.5

r=-0.89

• Strong positive 
• Weak positive 
• Strong negative 
• Weak negative 

Tags

CCSS.HSS.ID.B.5

Explain the meaning of r=-0.89

• as x decrease, y decrease

• as x increase, y increase

• As x increase, y decrease

• no correlation

Tags

CCSS.HSS.ID.B.5

Estimate the correlation coefficient for this scatterplot.

• r = 1.2
• r = 0.89
• r = 0
• r = -0.89

Tags

CCSS.HSS.ID.C.8

Determine the best correlation coefficient of the given data:

• .9820

• -.9643

• -1.409

• .164

Tags

CCSS.HSS.ID.C.8

What can we determine from the correlation coefficient (r)?

• Style + Type

• Percentage + Direction

• Strength + Direction

• Strength + Style

Tags

CCSS.HSS.ID.B.5

Determine the Correlation Coefficient and decide it's strength

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

Tags

CCSS.HSS.ID.C.8

If the correlation coefficient of a table of data is 0.85, what is true about the line of best fit?

• There is a weak, positive relationship
• There is a strong, positive relationship
• There is a weak, negative relationship
• There is a strong, negative relationship

Tags

CCSS.HSS.ID.C.8

You are analyzing a scatter plot that has a negative correlation. What is true of the of the x and y values?

• As x increases, y decreases
• As x increases, y increases
• As x decreases, y decreases

Tags

CCSS.HSF-LE.A.1B