Quantitative and Categorical Data

Stats intro & categorical data

by Brandy Stapleton

What is DATA?  

Information and facts that can be collected to help people solve problems, understand trends or to simply entertain!  We will be reviewing two types of data: Categorical and Numerical.

This is data that has been collected and displayed.  What types of graphs do you recognize?  Why are graphs helpful?

​Data

• ​Piece of information

• ​Gathered body of FACTS​

• In short, DATA is information or facts that can be collected to help people solve problems, understand trends or simply to entertain!

There are 2 types of data

​Qualitative Data

​Also known as CATEGORICAL data

​It categorizes or ​describes an element

​​So, operations like addition, subtraction, etc are NOT meaningful for such type of data

 Breeds of Dogs!

Categorical Data is...

 A collection of data that can be put into categories or groups.  Such as.......

Genres of books!

Categorical Data is...

 A collection of data that can be put into categories or groups.  Such as.......

​Quantitative Data

It is also known as NUMERICAL data as you can count it.

So, operations like addition, subtraction, etc are meaningful for such type of data

​​It is expressed in number form (not as letters or words) such as....

​

Your height! (How tall you are.)

​

Numerical Data is...

 

These data are expressed in number form, (NOT words or letters). For example...

​

Time spent walking!

Numerical Data is...

 

These data are expressed in number form, (NOT words or letters). For example...

​

There are 2 types of QUANTITATIVE data​

Which type of data is it?

Multiple Choice

Gender

• Categorical

• Discrete

• Continuous

Multiple Choice

Hair color

• Categorical

• Discrete

• Continuous

Multiple Choice

Height

• Categorical

• Discrete

• Continuous

Multiple Choice

Eye color

• Categorical

• Discrete

• Continuous

Multiple Choice

Which is an example of categorical data?

• favorite team sports?

• the number of red jellybeans in a box?

• how much money in your piggy bank?

Multiple Choice

What is an example of numerical data?

• most popular video game?

• how much each dog weighs (how heavy)?

• favorite day of the week

Multiple Choice

Which is an example of numerical data?

• Most popular video game

• How much each dog weighs (how heavy)?

• Favorite day of the week

• How happy is he?

Multiple Select

Which are examples of categorical data?

• Most popular video game

• How much each dog weighs (how heavy)?

• Favorite day of the week

• How tall is he?

• Shoe Size

Multiple Choice

Data that focuses on information that can be counted is called?

• Qualitative Data

• Quantitative Data

• Categorical Data

Multiple Choice

Data related to a person's experiences as represented through words is called

• Qualitative Data

• Discrete Data

• Continuous Data

​Quantitative Data

Is it discrete or continuous???

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Multiple Choice

How many miles it takes to use up a tank of gas. 

• Discrete
• Continuous

Multiple Choice

The time it takes to complete a marathon

• Continuous
• Discrete 

Multiple Choice

The number of orange Skittles in a bag.

• Continuous

• Discrete

Multiple Choice

The number of suitcases lost by airlines. 

• Discrete
• Continuous

Multiple Choice

The time it takes for a car battery to die. 

• Discrete
• Continuous

Multiple Choice

While driving to Florida, Sophia averaged 72 m.p.h. 

• Discrete
• Continuous

Great Work Today...​

Just one more question....

Open Ended

A. If you could collect your own data from a survey you prepared for your classmates, what would you like to know?

B. Would the data (answers) collected in the survey be categorical or numerical? Explain.