Scatter Plots Review

The following scatter plot shows Pam's training as she prepares to run a 6 mile race at the end of the month.  Which of the following would be a reasonable approximation for the length of time it would take for her to run 6 miles? 

• A. 50 min
• B. 80 min
• C. 45 min
• D. 63 min

Mrs. Collins made a scatterplot to show the relationship between the number of absences and a student’s final exam score. Based on this scatterplot, a student with 6 absences should get approximately what score on the final exam? 

• 65
• 92
• 70
• 76

If the debate team plans to practice for 6 hours, how many debates should they win?

• 20
• 16
• 24
• 28

Based on the graph, if Joe earned $800, how many hours did he work?

• 45 hours
• 60 hours
• 30 hours
• 15 hours

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

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

If Gold's Gym is looking to buy 30 TVs, how much will each one cost?

• 400
• 750
• 1250
• 0

If Gold's Gym is looking to buy 10 TVs, how much will each one cost?

• 400
• 750
• 1250
• 1000

Zara wants to know how teachers in the local school district feel about extending the school day to 30 minutes longer. Which method will produce a representative sample and therefore provide valid inference?

• Survey all the teachers who have publicly protested or supported the proposal.

• Survey the first 30 teachers who arrive at Zara's school in the morning.

• Survey a random sample of 30 teachers within the school district.

• Survey a random sample of 30 teachers and parents of kids within the district.

You want to estimate the number of students in a high school who ride the school bus. Which sample is best?

• 4 students in the hallway

• All students in the marching band

• 50 seniors at random

• 100 students at random during lunch

_______ is a part of a group being surveyed.

• Sample
• Population
• Random Sample
• Quartile