Representative & Random Sampling

There are 30 people. 11 are picked to take a survey. What is the sample?

• All 30 people

• The 11 people who take the survey

• The 19 people who do not take the survey

250 people go to a soccer game. 4 people are picked to march in a victory parade. What is the sample?

• All 250 people

• The 4 people who get picked

• The 246 people who do not get picked

Jessica is studying students at Commodore who play instruments. She surveys 75 students in the school. What is the population?

• The 75 students who get picked

• All students at Commodore

• The students who do not get picked

• All people in the world

Mr. Martin wants to know if students prefer cheese or pepperoni pizza. He surveys 50 out of 900 students. What is the population?

• All 900 students at Commodore

• All students who like pepperoni pizza

• The 50 students who get picked

• All people in the world

Ms. Smyles randomly picks 2 students in the class to give a cookie. What is the sample?

• All students at Commodore

• All students in the class

• The 2 students who get a cookie

• The students who do not get a cookie

Sameer surveys 15 students in his class to get ideas for his science project. What is the population?

• All students at Commodore

• All students in Sameer's class

• The 15 people who get picked

• All people in the world

A good sample must be: representative and random.

(Watch Mr. Jackson's video for help)

Which picture is a way to pick a random sample?

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A good sample must be: representative and random.

(Watch Mr. Jackson's video for help)

Which picture shows a representative sample?

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