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

Which of the following lines represents the line of best fit for the scatter plot?

• A
• B
• C
• D

Tags

CCSS.8.EE.B.5

The red line represents the line of best fit for the scatter plot. How many ice cream sales are expected if the temperature is 90°?

• 55
• 0
• 103
• 100

Tags

CCSS.HSS.ID.B.6

CCSS.HSS.ID.C.7

Using the line of best fit, find y when x = 7.

(Ignore the 30)

• 17.76

• 61.15

• 69.5

• 67.59

Tags

CCSS.HSF.BF.A.2

The table shown is comparing a person's foot length to their height.

Using the line of best fit, find a person's height, given that their foot length is 18 centimeters.

• 131.25

• 125.31

• 151.51

• 160.71

Using the line of best fit, what is the annual cost of raising and 18 year old child?

• $17,930

• Super Expensive

• $18,560

• $16,500

Tags

CCSS.HSS.ID.B.6

CCSS.HSS.ID.C.7

CCSS.HSA.CED.A.2

Using the line of best fit, find y given that x = 9.

• -7.86

• 7.86

• 9.42

• -9.42

Using the line of best fit, find the grade given that you studied for 3 hours.

• 80.9%

• 90.5%

• 106.3%

• 74.3%

Using the line of best fit, find the year given that there were 12 cases

• 2005

• 2006

• 2007

• 2008

Using the line of best fit, find the average given the maximum years is 30.

• 6.2

• 9.8

• 7.5

• 5.4

Tags

CCSS.8.EE.C.8C