Slope 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

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

Find the equation of the line of best fit for this table.

• y = -0.18x + 6.47

• y = 6.47x - 0.18

• y = 0.04x - 0.19

• y = -0.18x - 0.19

What is the correlation coefficient of the linear regression equation of the line of best fit for the data?

The scatterplot shows data collected from 9 people about how much money they earned based on the hours they worked. Use 2 points on the line of best fit and find the slope.

Tags

CCSS.8.EE.B.5

Oren plants a new vegetable garden each year for 14 years.  This scatter plot shows teh relationship between the number of seeds he plants and the number of plants that grow.  Which number best represents the slope of the line of best fit through the data?

• -10

• -1/10

• 1/10

• 10

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.C.8C

Oren plants a new vegetable garden each year for 14 years.  This scatter plot shows the relationship between the number of seeds he plants and the number of plants that grow.  Which number best represents the slope of the line of best fit through the data?

• -10

• -1/10

• 1/10

• 10

Tags

CCSS.8.EE.B.5

• A

• B

• C

• D

Tags

CCSS.HSF-LE.A.1B

A scientist is studying the relationship between the amount of sunlight a plant receives (x) and its growth rate (y). He finds the equation of the line of best fit to be:

y = 0.59x - 21.912

What is the rate of growth of the plant for each unit increase in sunlight?

• 0.59

• 0.59x

• 21.912

• -21.912

Tags

CCSS.HSF.LE.B.5