Predicting Line of Best Fit

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

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

What is the equation of the line of best fit?

• y= 2x+3

• y=3x+2

What type of association does this graph have?

• positive 

• negative

• none

• all of the above

Determine the predicted income if 22 hours were worked on an assembly job.

• $207.30

• $449.60

• $691.90

• $543.30

Determine the correlation coefficient of the given data:

• .9820

• -.9643

• 1.409

• .6864

Which graph has a correlation coefficient (r) of about -.6 ?

• a

• b

• c

• d

What is the y-intercept?

• -2

• 3

• 2

• -3

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