Lesson 12 Larger Populatoins

Lesson 12

Larger Populations

Learning Targets

•

I can explain why it may be useful to gather data on a sample of a population.

•

When I read or hear a statistical question, I can name the population of interest and give an
example of a sample for that population.

Task 1 Help Video

Task 2 Help Video

Task 3 Help Video

Task 4 Help Video

Summary Help Video

Multiple Select

• Suppose you are interested in learning about how much time seventh grade students at your school spend outdoors on a typical school day.

• Select all the samples that are a part of the population you are interested in.

• 1. The 20 students in a seventh grade math class.

• 1. The first 20 students to arrive at school on a particular day.

• 1. The seventh grade students participating in a science fair put on by the four middle schools in a school district.

• 1. The 10 seventh graders on the school soccer team.

• 1. The students on the school debate team.

Open Ended

• For each sample given, list two possible populations they could belong to.

1. Sample: The prices for apples at two stores near your house.

Open Ended

• For each sample given, list two possible populations they could belong to.

1. Sample: The days of the week the students in your math class ordered food during the past week.

Open Ended

• For each sample given, list two possible populations they could belong to.

1. Sample: The daily high temperatures for the capital cities of all 50 U.S. states over the past year.

Math Response

• A school's art club holds a bake sale on Fridays to raise money for art supplies. Here are the number of cookies they sold each week in the fall and in the spring:

Find the mean number of cookies sold in the fall.

Type answer here

Correct Answer: 23

Deg^°

Rad

Math Response

• A school's art club holds a bake sale on Fridays to raise money for art supplies. Here are the number of cookies they sold each week in the fall and in the spring:

Find the mean absolute deviation of number of cookies sold in the fall.

Type answer here

Correct Answer: 2.8

Deg^°

Rad

Math Response

Find the mean number of cookies sold in the spring.

Type answer here

Correct Answer: 24

Deg^°

Rad

Open Ended

1. Based on this data, do you think that sales were generally higher in the spring than in the fall?

Math Response

Find the mean absolute number of cookies sold in the spring.

Type answer here

Correct Answer: 2.6

Deg^°

Rad

Open Ended

1. The MAD for the fall data is 2.8 cookies. The MAD for the spring data is 2.6 cookies.

2. Express the difference in means as a multiple of the larger MAD.

(Subtract the Spring mean from the fall mean, then divide by the fall mean)