Two-Way Tables.

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Presentation transcript:

Two-Way Tables

What is the probability of.... Rolling a 6 on a dice Tossing a head on a coin Getting a heart in a deck of cards Being born on a Friday Getting a blue on this spinner Not getting a red on the spinner

Tables that show data and consider two different bits of information. Two-Way Tables Tables that show data and consider two different bits of information. Example: Whether you are Male or Female and whether you have a Android or an iPhone

Android vs. iPhone Android iPhone Total Female Male On the board: Post-it with: Male/Female, Date/No Date

Hair Colour v’s Eye Colour Blonde Brown Black Red Total Blue Green Hazel

Questions Using the Two-Way Table we just made, answer the following questions: How many people have blond hair? What is the most popular eye colour? How many people don’t have blue or brown eyes?

1 2 3 4 5 6

1 2 3 4 5 6 7 8 9 10 11 12

Question One People leaving a football match were asked which team they supported and if they were happy or unhappy. Man. Utd Liverpool Happy 40 8 Unhappy 2 20 How many Man. Utd supporters were happy? How many Liverpool supporters were asked the question? How many people were asked the question in total? Who do you think won the football match?

How many pupils did not have a dvd player at home? Question Two The pupils in a class conducted a survey to see who had a computer at home and who had a DVD player. Dvd No Dvd Computer 8 2 No Computer 20 3 How many pupils did not have a dvd player at home? How many pupils had neither item? How many pupils were there in the class?

Question 3

Question 4