Question

A surveyor wants to conduct a poll to see how many people purchase records at the mall.

Which polling method is likely to be biased?




Polling 30 random people in the mall each day for 5 days.

Randomly polling 500 people in the mall on one day.

Polling every third person in the food court.

Polling every other person that exits the music and entertainment store.

Answer 1

the last one since the people in the music and entertainment store are there to only buy records