Stats Unit 1 Quiz 1 Review

As part of a survey of college students, a researcher is interested in the variable class standing. She records a 1 if the student is a freshman, a 2 if the student is a sophomore, a 3 if the student is a junior, and a 4 if the student is a senior. The variable class standing is

• Categorical

• Quantitative Discrete

• Quantitative Continuous

• Categorical Discrete

Which of the following statements is true?

•  Two students working with the same set of data may come up with histograms that look different.

• Categorical data can be displayed with bar graphs or histograms.

• Histograms display each individual value in the distribution within each interval.

• The pie graph percentages have to add to 360.

Tags

CCSS.6.SP.B.4

CCSS.HSS.ID.A.1

Which of the following statements about the pie graph is correct?

• Of the 200 students surveyed, 30 of them prefer Pepsi.

• Of the 200 students surveyed, half of them prefer Coke or Pepsi.

• Of the 200 students surveyed, 100 of them prefer Sprite.

• Of the 200 students surveyed, half o them prefer Dr. Pepper or Sprite.

A random sample of human births at a local hospital is analyze and the category of birth weight is recorded and summarized in the chart.

What is the relative frequency of the average birth weight?

• 15%

• 24%

• 84%

• 60%

Tags

CCSS.8.SP.A.4

This graph displays the movie lengths of a random sample of movies on a popular streaming service.

If a movie is added and has a length of 80 minutes, which of the intervals would it be added to?

• A

• B

• C

• D

Tags

CCSS.6.SP.B.4

CCSS.HSS.ID.A.1

The relative frequency of a movie between 80 minutes and 99 minutes in length is 50%. How many movies are between 60 minutes and 79 minutes in length?

• 19

• 20

• 21

• 22

Tags

CCSS.6.SP.B.4

CCSS.HSS.ID.A.1