Making Inferences from Data

Suppose 10 out of 15 students surveyed said that they were going to attend the football game.  How many of the 3500 students in the school would you expect to attend the football game?

• 17500
• 5250
• 2333
• 1050

Tags

CCSS.7.RP.A.3

Mr. Nash, the school principal is gathering data about students and homework completion.  To get valid results, which survey method should he use?

• Post a link to his survey questions on the school website.
• Survey the first 40 students who walk into the cafeteria on Tuesday.
• Ask each homeroom teacher to select 4 students to answer his survey
• Have the computer randomly generate a list of students to answer his survey

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

Julia’s grades on her first five science quizzes are 80, 96, 81, 98, and 88.  What grade on the sixth quiz will give her average of exactly 90?

• 90
• 89
• 95
• 97

Tags

CCSS.7.NS.A.3

The box-and-whisker plots show the points scored in each Super Bowl by the AFC and NFC. About how many points greater is the interquartile range for the NFC than the AFC?

• about 20

• about 25

• about 35

• about 10

Tags

CCSS.6.SP.B.4

CCSS.HSS.ID.A.1

Antwan worked for 10 weeks at a summer job.  For each of the first 9 weeks, his mean earning was $250 per week.  In the last week, he earned $500 because he received a bonus.  How did the bonus affect his mean salary?

• increased by $25
• increased by  $250
• decreased by $250
• decreased by $25

Dr. Gilmore's research group tagged and released 800 squirrels for a study of a local park. Later, they trapped 430 squirrels, 43 of which had tags.

To the nearest whole number, what is the best estimate for the squirrel population?

• 43

• 80

• 370

• 8000

A survey found that 5 out of 7 students drink soft drinks daily. If there are 420 students in a school, what is a reasonable prediction for the number of students drink soft drinks daily?

• 630 students

• 418 students

• 300 students

• 60 students

Tags

CCSS.6.RP.A.3B

Gabriel random surveys 40 people who drink coffee, and asks where they buy coffee. 10 out of the 40 people said they buy coffee at Dunkin. If there are 100 coffee drinkers at his office, how many could he guess may buy coffee at Dunkin?

• About 100

• About 140

• About 70

• About 25

Tags

CCSS.7.SP.A.2