Scatterplots and Making Predictions

Based on the graph, if Joe earned $400, how many hours did he work?

• 25 hours
• 35 hours
• 45 hours
• 15 hours

Based on the trend in the data, approximately how many free throws would a player be expected to make if he attempted 60 free throws?

• 50
• 35
• 25
• 60

Eight of the 11 people on the TRE Train are carrying a briefcase. Based on this information, if there are 700 people on the train, then about how many do NOT have a briefcase.

*NOTE: enter your answers as a number ONLY.

Pizza Hut surveyed a random sample of students to determine what pizza they prefer. Cheese pizza was preferred by 40 students. Pepperoni pizza was preferred by 28 students. Based on the results, how many of the 340 students in the 9th grade can be expected to prefer cheese pizza?

*NOTE: enter your answers as a number ONLY.

On a youth soccer team 3 out of the 12 team members have played in previous years. Based on this information, if 150 kids are in the youth soccer league, then how many could be expected to have played the year before?

*NOTE: enter your answers as a number ONLY.

The airport security randomly selected 36 suitcases from the security line. Of these bags, they screened 8 suitcases. Based on this information, what is the most reasonable prediction for the number of suitcases they will screen in a group of 180?

*NOTE: enter your answers as a number ONLY.

A box of 25 lightbulbs is shipped to a hardware store. When it arrives, four of the bulbs are broken. Predict the number of broken lightbulbs in an order of 125 bulbs.

*NOTE: enter your answers as a number ONLY.

Based on the graph, if Sarah earned $600, how many hours did she work?

• 30 hours

• 40 hours

• 50 hours

• 20 hours

Based on the trend in the data, approximately how many free throws would a player be expected to make if he attempted 80 free throws?

• 80

• 40

• 55

• 70

Based on the graph, if Mike earned $300, how many hours did he work?

• 25 hours

• 10 hours

• 15 hours

• 20 hours