Step 1:
Find the mean of each sample.
Step 2:
Make a box-and-whisker plot of the sample means.
Step 3:
Use the box-and-whisker plot to estimate the actual
mean number of hours students with part-time jobs
work each week.
How does your estimate compare to the mean of the
entire data set?
Work with a partner. Another way to generate multiple samples of data is to
use a simulation. Suppose 70% of all seventh graders watch reality shows on
television.
Step 1:
Design a simulation involving 50 packing peanuts by marking 70% of
the peanuts with a certain color. Put the peanuts into a paper bag.
Step 2:
Simulate choosing a sample of 30 students by choosing peanuts from
the bag, replacing the peanut each time. Record the results. Repeat this
process to generate eight more samples. How much variation do you
expect among the samples? Explain.
Step 3:
Display your results.
ACTIVITY:
Using Measures from Multiple Random Samples
2
ACTIVITY:
Using a Simulation
3
Hours Worked Each Week
1:
6, 8, 6, 6, 7, 4, 10, 8, 7, 8
2:
10, 4, 4, 6, 8, 6, 7, 12, 8, 8
3:
10, 9, 8, 6, 5, 8, 6, 6, 9, 10
4:
4, 8, 4, 4, 5, 4, 4, 6, 5, 6
5:
6, 8, 8, 6, 12, 4, 10, 8, 6, 12
6:
10, 10, 8, 9, 16, 8, 7, 12, 16, 14
7:
4, 5, 6, 6, 4, 5, 6, 6, 4, 4
8:
16, 20, 8, 12, 10, 8, 8, 14, 16, 8