Student Survey Inference Problems

Mr. Hargrove's math class focuses on making inferences about populations using data from random samples. The lesson covers the use of proportion boxes and percent bars to make predictions. Examples include predicting preferences for volleyball, library visits, pizza toppings, and TV ownership. The class emphasizes understanding inferences as conclusions drawn from evidence and reasoning.

What is the main focus of Mr. Hargrove's math class in this lesson?

• Solving algebraic equations

• Learning about calculus

• Understanding geometric shapes

• Making inferences about populations

What is an inference?

• A direct observation

• A conclusion drawn from evidence and reasoning

• A random guess

• A mathematical formula

In the first example, how many students preferred volleyball?

• Nine

• Eight

• Seven

• Ten

How many total students participated in the survey in the first example?

• 35

• 28

• 30

• 32

What is the predicted number of students who would prefer volleyball if 420 students were surveyed?

• 130

• 120

• 110

• 100

In the second example, how many students visit the library four times per week?

• Five

• Four

• Three

• Two

What is the total number of students surveyed in the library visits example?

• 16

• 18

• 20

• 22

How many students are predicted to visit the library four times per week if 270 students were surveyed?

• 45

• 50

• 55

• 40

In the third example, what percentage of students prefer something other than mushroom, cheese, or pepperoni?

• 25%

• 20%

• 15%

• 10%

How many students are predicted to prefer other toppings if 320 students were surveyed?

• 40

• 50

• 45

• 48