Line of Best Fit Scatterplots

Which line appears to fit the data better?

• line A

• line B

The scatterplot shows the relationship between the length of a long-distance phone call and the cost of the phone call.

Based on the line of best fit for the scatterplot, which of the following amounts is closest to the cost of a 120 minute phone call?

• $10

• $12

• $15

• $20

What is the correlation between length of running start and distance of jump?

• positive:  the further you run the further you jump

• negative: the less you run the less distance of your jump

• positive: the further your running start the less your distance

Which shows a line of best fit?

• 
• 
• 
• 

• gain 5 hour of sleep for 7 cups of coffee

• lose 5 hours of sleep for 7 cups of coffee

• lose 7 cups of coffee for 5 hours of sleep

• lose 5 cups of coffee for 7 hours of sleep

• gain 7 cups of coffee for every 5 hours of sleep

What is the slope of this trend line?

• 70

• -3

This scatterplot could show the relationship between which two variables?

• speed of an airplane (x) vs. distance traveled (y)

• outside air temperature (x) vs. air conditioning costs (y)

• age of an adult (x) vs. height of an adult (y)

• distance traveled (x) vs. gas remaining in the tank (y)

For which scatterplot would the line of best fit be represented by the equation:

y=1/2 x +2?

• 
• 
• 
• 

A group of friends recorded the time it took to ride their bikes around the park. The scatterplot shows their results with the line of best fit.

Using the line of best fit, which is closer to the number of minutes it would take to complete 9 laps?

• 4

• 5

• 6

• 7

Describe the strength and direction of the trend

• Moderate Negative Trend

• Strong Negative Trend

• Moderate Positive Trend

• Strong Positive Trend