1. Samples & Populations 2.1
Learning Target: Analyze a sampling plan to make inferences about a population.
Homework: Complete class work on p. 2-3 of SP Investigation packet 2
Warm Up:

2. * Each box plot shows the heights of 30 students at each grade level.
Warm-Up 2
* Each box plot shows the heights of 30 students at each grade level.
1. Write down at least 3 comparisons you can make between the 2 box plots. (Hint: compare range, median, mean, lowest, highest, IQR)

3. About half of 7th graders are taller than 3/4ths of the 6th graders.
Warm-Up
7th grade has a larger range of heights than 6th grade (more variability).
The median height for 7th grade is 2 inches taller than the median height for 6th grade.
About half of 7th graders are taller than 3/4ths of the 6th graders.
What else?

8. p. 2
What is the population for the Honesty Survey?
Is asking readers to volunteer their answers a good way for the magazine to draw conclusions about the honesty of the population? Why or why not?

9. a. What is the population for the Honesty Survey?
toolkit
a. What is the population for the Honesty Survey?
The population of the United States.
b. What is the sample?
The sample is the readers of this particular magazine who log on and respond to the internet survey.
c. How was the sample chosen from the population?
The sampling plan is to ask people to answer the survey.

10. a. b.
90%

11. c.
80% d.
5, 280 – 1, 584 =
3, 696
3, 696
5, 280 =
70%

13. a. b.

14. a. b.

15. Samples & Populations 2.1 Homework:
Did I reach my Learning Target? Analyze a sampling plan to make inferences about a population.
Homework:
Complete class work on p. 2-3 for Investigation 2