How to Calculate the Line of Best Fit

The table shown is comparing a person's foot length to their height in cm. Calculate a line of best fit.

• f(x) = 25.05x + 5.57

• f(x) = 5.57x + 25.05

• f(x) = -5.57x + 25.05

• f(x) = 5.57x - 25.05

find line of best fit using calculator through these points (0,0)(1,2) (3,5) (6,7)

• y=65x+7

• y=1.14x+.64

• y=1.5x+64

Tags

CCSS.8.EE.B.5

What is the line of best fit?

• f(x)= 5x+1.82

• cannot be determined

• f(x)= 1.82x + 5.02

• f(x)= 1.1x + 4.2

Tags

CCSS.8.EE.B.5

• y = 1.45x + 22
• y = -2x + 15
• y = 1.33x + 30
• y = -1.5x + 24

Tags

CCSS.8.EE.B.5

Which of the following could be a possible line of best fit for the data?

• y = -5/2x + 20

• y = -x + 19

• y = x + 20

• y = 2/3x + 15 

Find the equation of the line of best fit for the given data

• y=163.41x+4.19

• y=-163.41x+4.19

• y=-4.19x+163.41

• y= 4.19x+(-163.41)
  

• positive trend
• negative trend
• no trend

Tags

CCSS.HSF-LE.A.1B

The table shows the height of a tree for various years after it was planted. Using the line of best fit, how tall would the tree be 30 years after it was planted?

• 22 feet

• 23 feet

• 36 feet

• 37 feet

What is the equation of the line of best fit?

• y = -25x + 170

• y = -5/8x + 170

• y = 25x + 170

• y = 5/8x + 170

Use the line of best fit to approximate rate of change relative to the scatter plot above.

• 7/5

• 5/7

• -7/5

• -5/7