22. You want to determine the average number of songs people keep on their MP3 players. You want to collect data from a random sample of at least 300. Which of these would be most valid method of collecting data?
A. Survey students coming in and out of your school cafeteria
B. Survey an equal number of students, teachers, parents, and grandparents
C. Survey the resident in a retirement community
D. Survey the people coming in and out of the grocery store on Sunday morning.
Is it A?

Question

22. You want to determine the average number of songs people keep on their MP3 players. You want to collect data from a random sample of at least 300. Which of these would be most valid method of collecting data?
A. Survey students coming in and out of your school cafeteria
B. Survey an equal number of students, teachers, parents, and grandparents
C. Survey the resident in a retirement community	
D. Survey the people coming in and out of the grocery store on Sunday morning.
Is it A?

jessiegonzales · Answer

@kropot72 @aviz

kropot72 · Answer

The data needs to be collected from people who use MP3 players. Which is likely to be the group who are the main users of MP3 players?

jessiegonzales · Answer

A?

kropot72 · Answer

Correct! Other choices would be inefficient by comparison.