Line of Best Fit

What is a line of best fit used for?

• To make predictions
• To make the graph look pretty
• To connect the points
• To make it look like you know what you are doing

Tags

CCSS.8.EE.B.5

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

About how many male math teachers were there in 2006?

• 15
• 30
• 35
• 45

Tags

CCSS.HSS.ID.A.1

CCSS.HSS.ID.B.6

What type of association does this graph show?

• Positive
• negative
• none
• all of the above

Tags

CCSS.HSS.ID.B.6

Which sentence describes the relationship shown on this scatter plot?

• As the temperature decreases, the visitors increase. 
• As the temperature increases, the number of visitors increases. 
• As the visitors increase, the temperature decreases. 
• No correlation

Tags

CCSS.HSF-LE.A.1B

What would be the correlation between study time and test grades?

• positive
• negative
• none
• cannot be determined

Tags

CCSS.HSF-LE.A.1B

What type of correlation do you think there is between:
Time Spent Watching TV & Grades

• Positive correlation
• Negative correlation
• No correlation
• cannot be determined

Tags

CCSS.HSS.ID.B.6

CCSS.HSS.ID.C.8

CCSS.HSS.ID.C.9

This measures how strong or weak the relationship between 2 quantitative variables are.

• Scatter Plot

• Causation

• Correlation

• Line of best fit

Tags

CCSS.HSS.ID.B.6

CCSS.HSS.ID.C.8

CCSS.HSS.ID.C.9

What does the value, r= -0.89, tell us about the linear relationship of two quantitative variables?

• Strong positive

• Weak positive

• Strong negative

• Weak negative

Tags

CCSS.HSS.ID.C.8

Determine the correlation coefficient of the given data:

• .9820

• -.9643

• 1.409

• .6864

Tags

CCSS.HSS.ID.B.6

CCSS.HSS.ID.C.8