Sign up for FREE

7.5.C.17 - Sampling Variability – Exit Ticket

Last updated about 4 years ago

3 questions

10

Question 1

1.

Suppose that you want to estimate the mean time per evening students at your school spend doing homework. You will do this using a random sample of 30 students. Suppose that you have a list of all the students at your school. The students are numbered 1, 2, 3, …. One way to select the random sample of students is to use the random digit table from today’s class, taking three digits at a time. If you start at the third digit of row 9, what is the number of the first student you would include in your sample?

10

10

From EngageNY.org of the New York State Education Department. Grade 7 Mathematics Module 5, Topic C, Lesson 17. Internet. Available from https://www.engageny.org/resource/grade-7-mathemat...; accessed 8/Apr/2016.

Question 2

2.

Suppose that you want to estimate the mean time per evening students at your school spend doing homework. You will do this using a random sample of 30 students. Suppose that you have now selected your random sample and that you have asked the students how long they spend doing homework each evening. How will you use these results to estimate the mean time spent doing homework for all students?

Question 3

3.

Suppose that you want to estimate the mean time per evening students at your school spend doing homework. You will do this using a random sample of 30 students. Explain what is meant by sampling variability in this context.