Statistics Comparing Data

What is the mode in the set of data?
2,2,2,4,4,5,6,6,6,7

• 2

• 6

• 2 and 6

• 2,4, and 6

find the median of
20 30 40 50 60

• 50

• 40

• 1

• 5

Why do we use double box and dot plots?

• To make people confused

• to make data seem misleading

• to save space on paper

• to compare populations

Find the mean:

90, 100, 95, 85, 60, 80

• 85

• 84

• 86

• 90

The number of pages that Carolyn wrote in her journal each day from Monday to Friday is shown below:

9, 8, 12, 6, 10

What is the mean number of pages she wrote per day?

• 5

• 6

• 9

• 11

According to a random telephone survey, 85 out of 100 of all working adults in the U.S. are satisfied with their current job. If I asked 500 adults, how many do you predict would be satisfied with their current job?

• 85

• 340

• 500

• 425

According to a random telephone survey of 100 adults, 85% of all working adults in the U.S. are satisfied with their current job. What is the population in this survey?

• 100 adults

• adults in the U.S.

• 85% of adults

Zoe completes a report by asking 70 students across campus. She found that 48% of students at her school do not wash their hands after using the bathroom. What is the sample of her survey?

• the bathroom

• students at her school

• 70 students

A survey was conducted to see how many people like to play board games. The statistics from the survey show 5 in every 15 people do like to play board games. If 150 people were surveyed, how many do you predict would say they like to play board games?

• 5

• 10

• 50

• 150

Billy wants to determine the favorite candy among all 7th graders. So he asks all the girls in his Math class. This is an example of a...

• biased sample

• random sample