Scatter Plot Trend Lines and Predictions

To make a prediction from a scatter plot it is beneficial to create trend line. The trend line is you best approximate for the middle of the data.

• Trend lines go through the middle of the all the points

• ...

What exam score would you expect for a student with 6 absences?

• 92

• 78

• 69

• 55

What would you expect the resting heart rate to be at 8 hours of weekly excercise?

• 62

• 50

• 40

• 39

How many hours of recreational activity would you expect for someone who works 60 hours.

• 14

• 20

• 8

• 26

How many bowlers would you expect if a group rented 12 lanes?

• 90

• 78

• 61

• 55

What's typing speed would you expect after 10 hours of learning?

• 24

• 30

• 15

• 35

How much would you expect a family of 6 to spend on average?

• 150

• 200

• 240

• 125

How many total dollars would you expect 10 people to spend?

• 130

• 150

• 110

• 100

How many free throws are likely to be made if 60 are attempted?

• 35

• 50

• 20

• 70

If Joe worked 30 hours, how much is he expected to earn?

• $600
• $200
• $1000
• $800