AnswersCommon Core Math 7 - MA3107 CRInferences and Predictions

Inferences and Predictions Answers

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1
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The manager of a movie theater wants to know what types of movies his customers prefer to watch. Which sample would most likely provide the most accurate data?

A
the first 30 people leaving the theater after an action film
B
a random group of 30 people people at a mall
C
a random group of 5 people on the street
D
ten friends at a birthday party
2
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Why is it important to avoid a smaller sample size?Smaller sample sizes can be harder to acquire.Smaller sample sizes can be impossible to show in a graph.✔ Smaller sample sizes may not be representative of the population.Smaller sample sizes always give representative data.

A
Smaller sample sizes can be harder to acquire.
B
Smaller sample sizes can be impossible to show in a graph.
C
✔ Smaller sample sizes may not be representative of the population.
D
Smaller sample sizes always give representative data.

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