Line of Best Fit

Which scatter plot shows a linear relationship between x and y?

• Graph A

• Graph B

• Graph C

• Graph D

• 617.51 miles

• 621.09 miles

• 100 miles

• 0.19 miles

Write the linear regression equation for the following data points. Round to the nearest hundredth.

Select the statement that best describes the line.

• The line is the line of best fit.

• The line is NOT a line of best fit because it does not pass through two points.

• The line is NOT a line of best fit because it does not go through the middle of the data set.

• The line is NOT a line of best fit because it does not go through the origin.

Which line is the best line of best fit?

• a

• b

• c

• i don't see any lines

What are the coordinates of the outlier?

• (1,9)

• (9,1)

• (2,2)

• y=x

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

Q1. What is the trend observed in the data?

• A) positive trend

• B) negative trend

• C) no trend

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