Count how much change you have on you right now.

a) Suppose you check on your change every day for a week as you head for lunch and average the results. What parameter would this average estimate?

b) Suppose you ask 10 friends to average their change every day for a week, and you average those 10 measurements. What is the population now? What parameter would this average estimate?

c) Do you think these 10 average change amounts are likely to be representative of the population of change amounts in your class? In your college? In the country? Why or why not?

Question content area bottom

Part 1

a) Select the correct choice below.

A.

This average would estimate the true mean amount of change you typically purchase lunch with.

B.

This average would estimate the true mean amount of change you typically have after breakfast.

C.

This average would estimate the true mean amount of change you typically own.

D.

This average would estimate the true mean amount of change you typically carry.

Part 2

b) Select the correct choice below.

A.

This average would estimate the true mean amount of change your friends typically own. The population does not change.

B.

This average would estimate the true mean amount of change your friends typically carry. The population increases from yourself to your friends.

C.

This average would estimate the true median amount of change your friends typically have after breakfast. The population increases from yourself to your friends.

D.

This average would estimate the true median amount of change your friends typically purchase lunch with. The population increases from yourself to your friends.

Part 3

c) Select the correct choice below.

A.

This average is possibly representative of a class, college, or country. Many individuals are likely to have similar needs for change during the day.

B.

This average is possibly representative of a class, but not representative for larger groups. Your classmates are likely to have similar needs for change during the day.

C.

This average is possibly representative of a class or college, but not for a country. Many students are likely to have similar needs for change during the day.

D.

This average is probably not representative of either a class, college, or country. Many individuals are likely to have varying needs for change during the day.