Quiz about Statistics Review

Question 1

Lily is trying to see what is the most popular flower among the 750 students in her school. She asks a sample of 50 students.

What is the population of her study?

Accepted Answer

The 750 students in the school.

Answer

The 50 random students.

Answer

The 30 teachers in the school.

Answer

The people who picked roses.

Question 2

2. In a random sample Micah found that 5 out of 20 in his class failed the vocabulary quiz. If he used his sample to make a prediction about the number of 7th graders who failed out of 150 total 7th graders, how many should he predict?

Accepted Answer

About 38 students

Answer

About 150 students

Answer

About 50 students

Answer

About 5 students

Question 3

3. Jasmine wants to research the popularity of various Girl Scout cookies in her neighborhood.

Which of the following methods could she use to generate a representative sample?

SELECT ALL THAT APPLY

Accepted Answer

Assign each house a number and use a random number generator to produce a list of houses for the sample.

Accepted Answer

List the houses on slips of paper and draw 20 from a hat.

Answer

Choose every house that has at least three trees in the yard.

Answer

Choose only the houses of people you know.

Answer

Choose all the houses that have a garage.

Question 4

Based on the box plots, which group of students generally scored higher on their math test?

Accepted Answer

Morning

Answer

Afternoon

Answer

Evening

Answer

Midnight

Question 5

What percentage of morning students did better than all the afternoon students?

Accepted Answer

25%

Answer

0%

Answer

50%

Answer

75%

Question 6

The dot plots show the number of hours per week that each middle school spends reading. Based on the data, which school spends MORE TIME reading?

Accepted Answer

School B

Answer

School A

Answer

School C

Answer

Can't tell from this data

Question 7

The dot plots show how many miles per gallon each type of vehicle averages. Which type of vehicle show MORE VARIATION in the data?

Accepted Answer

cars

Answer

SUVs

Answer

motorcycles

Answer

Can't tell from this data.

Question 8

12. A toy store polls every tenth customer to determine if they are satisfied with the type of toys in the store. Fifty customers are surveyed, and 35 are satisfied. What conclusion can be drawn for the 600 daily customers?

Accepted Answer

Of the 600 customers, 420 would be satisfied with the type of toys in the store.

Answer

25% of the customers are not satisfied with the types of toys in the store.

Answer

30% of the customers are satisfied with the types of toys in the store.

Answer

70% of the customers are unsatisfied with the types of toys in the store.

Question 9

A population is ....

Accepted Answer

the whole group in the study.

Answer

A mathematical statement that backs up what is predicted.

Answer

a small portion of people/items in a study.

Answer

What is a population?

Question 10

Give an example of a sample in the following situation.

Jose is doing a study of how well people in school like fruits and vegetables.

Accepted Answer

5 of the people in our class.

Answer

Can't be determined in this situation.

Answer

All the teachers in the school.

Answer

All the students in the school.

Question 11

What are the measures of center?

SELECT ALL THAT APPLY.

Accepted Answer

Mean

Accepted Answer

Median

Answer

Mode

Answer

Interquartile Range

Question 12

What are the measures of variability?

SELECT ALL THAT APPLY.

Accepted Answer

Interquartile range

Accepted Answer

range

Answer

mean

Answer

median

Statistics Review

Create a free account and access millions of resources

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Mathematics