Line of Best Fit, Regression, Correlation Coefficient

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

• A

• B

• C

• D

When the data closely resembles a line

• Strong Correlation

• Weak Correlation

• No Correlation

• Correlation

A line drawn in a scatter plot to fit most of the dots and

shows the relationship between the two sets of data

• Association

• Causation

• Line of Best Fit

• Linear Regression

What type of correlation does this graph have?

• positive

• negative

• none

• all of the above

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

• y = -2.28x + 51.08

• y = 51.08x - 2.28

• y = 0.06x - 0.26

• y = -2.28x - 0.26

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

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

The relationship ship between a woman's show size and length of her foot, in inches, is given in the table.

Calculate the line of best fit using the graphing calculator.

• a = .25 and b = 7.75

• y = .25x + 7.75

• r = 1

• y = ax + b

Find the line of best fit:

• y = 6.3x + 62

• y = 62x + 6.3

• y = 3x + 84

• y = 84x + 3

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

• y = 25.05 + 5.57x

• y = 5.57 + 25.05x

• y = -5.57 + 25.05x

• y = 5.57 - 25.05x