Measures of Center

Measures of Center

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

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

​Statistics Vocabulary

​Statistics - the study of data

​

​Data - a collection of facts

​

​Quantitative data - information given in numbers. Usually this is information that you can count or measure

​

​Qualitative data - information given that describes something. Usually this is information you can observe such as appearances, textures, smells, tastes, etc.

Multiple Choice

The study of data is called...

• stations

• statistics

• stars

• studying

Multiple Choice

A collection of facts is...

• knowledge

• books

• data

• dates

Multiple Choice

Information given in numbers.

• Qualitative Data

• Quantitative Data

Multiple Choice

Information given that describes something.

• Qualitative Data

• Quantitative Data

Multiple Choice

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?

• 4

• 5

• 6

• 7

Multiple Choice

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?

• 4

• 5

• 6

• 7

Multiple Choice

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?

• 4

• 5

• 6

• 7

Multiple Choice

​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?

• Yes

• No

Multiple Choice

​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?

• Yes

• No

Multiple Choice

​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?

• Yes

• No

Multiple Choice

​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?

• Yes

• No