Predictions Using Line of Best Fit

As x increases, y decreases

• Postive Correlation

• Negative Correlation

• No Correleation

• Trend Line

The data slightly resembles a line but is more spread out

• Strong Correlation

• Weak Correlation

• No Correlation

• Correlation

Make predictions based on values outside the data points

• Interpolation

• Extrapolation

• Correlations Coefficient

• Residual

The measure of the strength and direction of a linear relationship

• Interpolation

• Extrapolation

• Correlations Coefficient

• Residual

The red line represents the line of best fit for the scatter plot. How many ice cream sales are expected if the temperature is 90°?

• 55

• 0

• 103

• 100

The table shown is comparing a person's foot length to their height.

Using the line of best fit, find a person's height, given that their foot length is 18 centimeters.

• 131.25

• 125.31

• 151.51

• 160.71

Using the line of best fit, find the tire skid distance given that your speed was 100 mph.

• 370 feet

• 450 feet

• 250 feet

• 355 feet

Using the line of best fit, find y when x = 7.

(Ignore the 30)

• 17.76

• 61.15

• 69.5

• 67.59

Using the line of best fit, what is the annual cost of raising and 18 year old child?

• $17,930

• Super Expensive

• $18,560

• $16,500

Using the line of best fit, find y given that x = 9.

• -7.86

• 7.86

• 9.42

• -9.42