Context Line of Best Fit and the Correlation Coefficient

If the correlation coefficient of a table of data is 0.85, what is true about the line of best fit?

• There is a weak, positive relationship

• There is a strong, positive relationship

• There is a weak, negative relationship

• There is a strong, negative relationship

What is the correlation coefficient of the line of best fit for the table?

• 1

• -1

• 0.887

• 0.942

What is the line of best fit for the data?

• y = .25x + 8.25

• y = 8.25x + .25

• y = x + 1

Tags

CCSS.8.EE.B.5

What is the correlation coefficient for the table?

• 1

• -1

• .25

• 8.25

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

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

Determine the correlation coefficient for the data shown.

Given the following Scatter Plot, select the option that is most likely the r value.

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 equation of the line of best fit?

• y= 6x + 2

• y = -2x +6

Tags

CCSS.8.EE.B.5