Random Samples vs. Not Random Samples

You want to know which store shoppers at the mall visit the most. You ask each 10th person as they enter the mall which store they will visit. Is this an example of a random sample or a not random sample?

You want to know what the 7th grade students think of their science class. You poll 100 random 7th graders. Is this an example of a random sample or a not random sample?

You want to know which store shoppers visit the most. You enter the toy store and survey 20 customers. Is this an example of a random sample or a not random sample?

Your teacher is selecting students to help set up for a school dance. Only 5 students are needed to help. She puts everyone's name in a hat and selects 5 names without looking. Is this an example of a random sample or a not random sample?

A hip-hop radio station wants to know what type of music is the most popular. They ask their listeners to call in and select their favorite type of music. Is this an example of a random sample or a not random sample?

You want to survey the students in your school about their exercise habits. At lunchtime you stand by the salad line. You survey every student who bought salads for lunch. Is this an example of a random sample or a not random sample?

You want to know how many students in your school have broken a bone. You survey the members of the football team. Is this an example of a random sample or a not random sample?

A cell phone company selects 500 customers from its database and then surveys those customers to find out if they like their phone service. Is this an example of a random sample or a not random sample?

The owners of a local game store sends 150 random customers a survey. Is this an example of a random sample or a not random sample?

The movie theater wants to know what genre of movies their customer enjoy. They survey all the people attending the children's matinee. Is this an example of a random sample or a not random sample?

You want to find out how many students in school must finish their homework before they can watch TV or play video games. You survey all the students in the cafeteria during your lunch period. Is this an example of a random sample or a not random sample?

You randomly chose 50 books from the school library to find the average length of each book. Is this an example of a random sample or a not random sample?

A bank casually selects customers throughout the day to ask them if they are pleased with the service they receive. Is this an example of a random sample or a not random sample?

You ask 50 people in your local grocery store which grocery store is their favorite. Is this an example of a random sample or a not random sample?