Correlation Coefficient and Best Fit Line

What is the correlation coefficient for the data?

• 1

• -1

• .9967

• .9984

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

• 1

• -1

• 0.887

• 0.942

r=-0.89

• Strong positive 

• Weak positive 

• Strong negative 

• Weak negative 

What is the line of best fit for the data?

• y = .25x + 8.25

• y = 8.25x + .25

• y = x + 1

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

What is the equation of the line of best fit?

• y= 6x + 2

• y = -2x +6

What is the correlation coefficient for the table?

• 1

• -1

• .25

• 8.25

Which equation best represents the data in the table?

• y = -13x + 143

• y = 13x + 143

• y = 143x + 13

• y = .996x + .998

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

r=0.3

• Strong positive 

• Weak positive

• Strong negative

• Weak negative