STUDY GUIDE FOR STATISTICS (UNIT 3.4)

6. Ana wants to know the average student’s opinion of the tardy policy at her school. Which group of students should she survey in order to achieve the most accurate results?

• A. Thirty randomly selected students from her school
• B. Thirty students who are rarely tardy
• thirty of her friends

Tags

CCSS.6.SP.A.1

9. Mrs. Croix is conducting a survey to find out the favorite snack of fifth and sixth graders. She will ask a sample of 100 students. Which of the groups below should be surveyed to get the BEST representative sample?

• A. 20 students from each of the 5 local fifth- and sixth-grade schools.
• B. The first 100 students who go to a local baseball game

Tags

CCSS.6.SP.A.1

CCSS.6.SP.A.2

A city council member wanted to know how her constituents felt about a planned rezoning. She randomly selected 75 names from the city phone directory and conducted a phone survey.

• The population is everyone listed in the city phone directory; the sample is the 75 people selected.
• The population is residents of the city; the sample is the registered voters in the city.
• The population is registered voters in the city; the sample is everyone listed in the city phone directory.

Tags

CCSS.7.SP.A.1

CCSS.7.SP.A.2

• More than 50% of the customers bought chocolate. 
• About 50% of the customers bought strawberry. 
• More than 25% of the customers bought vanilla. 
• About 25% of the customers bought mint. 

Tags

CCSS.6.RP.A.3C

• 5 red shirts
• 17 red shirts
• 40 red shirts
• 83 red shirts

Tags

CCSS.6.RP.A.3B

• About 40% of the marbles in the bag are red.
• The bag probably contains about 45 yellow marbles.
• There are about twice as many blue marbles than green marbles. 
• There are about three times as many green marbles as there are red marbles. 

Tags

CCSS.7.SP.A.2

Zoie completes a report by asking 70 students across campus. She found that 48% of CIAA students do not wash their hands after using the bathroom. What is the sample size?

• 48

• 100

• 70

• CIAA students

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.4

Each dot represents 1 day. How many days were recorded?

• 9
• 21
• 20
• 105

Tags

CCSS.4.OA.C.5

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

• 5 points

• 7 points

• 10 points

• 15 points

Tags

CCSS.6.SP.A.1

CCSS.6.SP.A.2

CCSS.6.SP.A.3

CCSS.6.SP.B.4

CCSS.6.SP.B.5

The dot plots compare the number of raffle tickets sold by boys and girls during a school fund-raiser. Which plot has an outlier? 

• Girls
• Boys
• Both Plots
• Neither

Tags

CCSS.6.SP.A.1

CCSS.6.SP.A.2

CCSS.6.SP.B.4

CCSS.6.SP.B.5