Measures of Center

The study of data is called...

A collection of facts is...

Information given in numbers.

Information given that describes something.

I can calculate measure of center (mean, median, and mode).

When asked how many hours they spend on a computer each day, students gave the following answers (in hours):

2, 5, 4, 1, 17, 5, 4, 5, 2.

What is the mean?

I can calculate measure of center (mean, median, and mode).

When asked how many hours they spend on a computer each day, students gave the following answers (in hours):

2, 5, 4, 1, 17, 5, 4, 5, 2.

What is the median?

I can calculate measure of center (mean, median, and mode).

When asked how many hours they spend on a computer each day, students gave the following answers (in hours):

2, 5, 4, 1, 17, 5, 4, 5, 2.

What is the mode?

​I can determine if a sample can be used to make valid inferences.

Ms. Jacobson wants to know what the students' at DMS favorite class is. She has the Math Counts Club fill out a survey. Is this a random sample?

​I can determine if a sample can be used to make valid inferences.

Ms. Jacobson wants to know what the students' at DMS favorite class is. She has the Math Counts Club fill out a survey. Can this sample be used to make valid inferences?

​I can determine if a sample can be used to make valid inferences.

Someone is trying to figure out what the most popular restaurant in Dickinson is. They call random numbers from the Dickinson phonebook and ask them. Is this a random sample?

​I can determine if a sample can be used to make valid inferences.

Someone is trying to figure out what the most popular restaurant in Dickinson is. They call random numbers from the Dickinson phonebook and ask them. Can this sample be used to make valid inferences?