Discrete and Continuous Data

Discrete and Continuous Data

What is Discrete Data?

Data that can only take certain values

What does Discrete Data look like?

Examples of Discrete Data

Number of Students in a Class

Number of Candy Bars Sold

Number of Cars Sold

How dows Continuous Data look like?

What is Continuous Data?

Data that can take any value

Examples of Continuous Data

Hours, Minutes, Seconds

Month, Year

Speed

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EXAMPLE: There are five people thinking about going to a baseball game. Each ticket cost $15. If one person goes how much will the total be?

Examples of Discrete Data

Number of Students in a Class

Number of Candy Bars Sold

Number of Cars Sold

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There are 5 people thinking about going to a baseball game. Each ticket for a baseball game cost $15. If 2 people go how much will the total be?

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There are 5 people thinking about going to a baseball game. Each ticket for a baseball game cost $15. If 3 people go how much will the total be?

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There are 5 people thinking about going to a baseball game. Each ticket for a baseball game cost $15. If 4 people go how much will the total be?

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There are 5 people thinking about going to a baseball game. Each ticket for a baseball game cost $15. If 5 people go how much will the total be?

Baseball Game Data

Table of Values

Baseball Game Graph

Poll

Can 1/2 a person go to a game? How about 3 1/2 people?

• Yes

• No

Because the answer was NO we do not connect the dots.

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The water in a 20 gallon bathtub drains at a rate of 2 gallons per minute. The number of gallons remaining in the tub is a function of the number of minutes it has been drained. How many gallons are there in the beginning?

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The water in a 20 gallon bathtub drains at a rate of 2 gallons per minute. How many gallons remain in the bathtub after 1 minute of draining the tub?

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The water in a 20 gallon bathtub drains at a rate of 2 gallons per minute. How many gallons remain in the bathtub after 2 minute of draining the tub?

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The water in a 20 gallon bathtub drains at a rate of 2 gallons per minute. How many gallons remain in the bathtub after 4 minutes of draining the tub?

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The water in a 20 gallon bathtub drains at a rate of 2 gallons per minute. How many gallons remain in the bathtub after 8 minutes of draining the tub?

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The water in a 20 gallon bathtub drains at a rate of 2 gallons per minute. How many gallons remain in the bathtub after 10 minutes of draining the tub?

Draining a Bath Tub Table

Draining a Bathtub

Graph

Poll

Can we measure the bathtub in 1 1/2 minutes? How about 5 1/2 minutes?

• Yes

• No

Because we answered YES we need to connect the points on the graph.