Unit 1: Statistical Sampling Review

Multiple Select

Which two statistical questions can be effectively answered by collecting data and creating a boxplot?

• What are the ages of the teachers at HMS?

• What is the typical weight of the dogs found at the Fairfax Animal Shelter?

• What are the favorite foods served at the HMS cafeteria for lunch?

• How is the temperature in Herndon changing over time?

Multiple Choice

Which of the following would provide you with the best set of data to answer the given question?

"What is the typical amount of time in minutes spent by high school students doing homework each week?"

• The results from a survey of 100 random people at a baseball game

• A Math Space report of all Herndon High School students latest homework grade.

• A report of all grades received from every student in elementary, middle, and high school in Fairfax.

• The results of a survey of 1000 randomly selected high school students from across the United States.

Multiple Choice

The Transportation Department wants to estimate the amount of time spent by people traveling to work on the Metro (subway) each morning.

Which of the following is a representative sample for this situation?

• Ask every person that has ever used the Metro how many minutes they spend on the subway traveling to work.

• Ask 500 random travelers at the airport on a Wednesday

• Ask the subway engineer how many minutes they drive the train each day

• Randomly select 5000 subway riders on Metro about their travel times on random days Monday - Friday

Multiple Choice

The Transportation Department wants to estimate the amount of time spent by people traveling to work on the Metro (subway) each morning.

A large representative sample was taken by the Transportation Department. Which is the best way to display and represent this data?

• A circle graph that shows the percentage of time traveled each hour.

• A line graph showing travel time over the different days of the year.

• A boxplot that shows each individual data point collected.

• A boxplot to see the time spent traveling by the middle half (25% + 25%) of travelers.