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7 -5. Two-Way Frequency Tables. Objectives Interpret data using a two-way frequency table. My Dog Fido.
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7-5 Two-Way Frequency Tables • Objectives • Interpret data using a two-way frequency table
My Dog Fido 1. Fido attended an obedience class. There were 50 dogs in the class. 30 of the dogs were classified as “large” and 20 were classified as “small”. At the end of the class the owners of 15 dogs received certificates indicating that their dogs had passed the class.
Two-Way Table Questions: What is the proportion of large dogs? What is the proportion of small dogs? What is the proportion of dogs that passed the course?
Two-Way Table Questions: What is the proportion of large dogs? What is the proportion of small dogs? What is the proportion of dogs that passed the course?
2. Some people are asked about their favorite outdoor sport. Complete the two-way frequency table.
Complete the following two-way table about ways of eating potato and then answer the questions. How many boys liked mashed? How many teachers preferred new potatoes? How many girls were asked? Out of the people who liked chips, how many were boys?
Continued. A person is picked at random from the sample. • What is the probability the person picked is a boy? • What is the probability the person liked mash? • What is the probability the person was a teacher who preferred new potatoes? • What is the probability that, out of the girls, the person liked chips? • Out of the people who liked chips, what is the probability the person was a boy?
Complete the table, then answer the questions about types of coffee bought. Coffee is sold in three types and in three weights. • How many people bought 100g of powdered coffee? • How many people bought ground coffee? • Out of the packets weighing 200g, what is the probability the packet bought contained granules?
Classwork/Homework 7-5Worksheet