Random Samples (7.SP.1 and 7.SP.2)

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. Random or not random?

• random

• not random

You want to know which store shoppers visit the most. You enter the toy store and survey 20 customers. Random or not?

• random

• not random

Your school newspaper is conducting a survey to find out which school sports team is most popular.  How would it most likely get a random sample from the student population?

• By asking every fifth person entering the basketball game

• By asking 10 students from every homeroom

• By asking the parents 

• By asking the students on the pep club

Which of these is NOT a random sample to determine the favorite cafeteria food item?

• Ask every 10th student on the school roster

• Ask every 15th student entering school in the morning

• Ask every student on the school roster

• Ask 5 students at the local ice cream stand

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. Random or not?

• random

• not random

You want to know what the 7th grade students think of their science class. You poll 100 random 7th graders. Random or not?

• random

• not random

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.Random or not?

• random

• not random

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. Random or not?

• random

• not random

You want to know what the 7th grade students think of their science class.  You poll 100 random 7th graders. Random or not?

• random

• not random

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. Random or not?

• random

• not random