Probability Frequency

Modulo 9 Section 1 & 2

Two Way Frequency Tables

Multiple Choice

How many total people were surveyed?

• 224

• 448

• 131

• 146

Multiple Choice

Which of the values below is a joint frequency?

• 400

• 200

• 182

• 4

Multiple Choice

The number of people who purchased a hot dog and a soda is an example of ___________.

• Marginal Frequency

• Joint Frequency

• Marginal Relative Frequency

• Joint Relative Frequency

• Conditional Relative Frequency

Multiple Choice

How many people purchased no food and no drink?

• 60

• 10

• 20

• 200

Multiple Choice

Which of these values below is a marginal frequency?

• 182

• 120

• 46

• 10

Multiple Choice

The total frequency for any row or column is called a

• two-way frequency table.

• contingency table

• marginal frequency

Multiple Choice

The table shows incomplete info about customers' orders in a cafe. How many women visited the cafe in total?

• 37

• 15

• 22

• 12

Multiple Choice

What is Relative Frequency?

• The ratio of the number of times a category is represented to the total number of pieces of data

• The frequency of the number of times a category is represented

• Data that can be divided into categories based on the attributes of the data

• A two-way table

Fill in the Blanks

Multiple Choice

39 ÷ 240 would calculate the _______________ of males who prefer Sports Cars.

• Marginal Frequency

• Joint Frequency

• Joint Relative Frequency

• Marginal Relative Frequency

Multiple Choice

How do you calculate the marginal relative frequency for females?

• The answer is 180

• 180 ÷ 240

• 135 ÷ 180

• 45 ÷ 135

Multiple Choice

Students were surveyed about their pet preferences. What is the probability of a student being a freshman and liking dogs best?

• 14/25

• 12/25

• 6/25

• 13/50

Multiple Choice

Mrs. DeHart asked her students if they studied for their test or not. What percentage of his class studied and passed the test?

• 56.7%

• 63.3%

• 89.5%

• 85.0%

Multiple Choice

What percent of students eat breakfast?

• 40%

• 30%

• 70%

• 30%

Multiple Choice

What percent of students age 14 - 17 skip breakfast?

• 6%

• 60%

• 24%

• 30%

Multiple Choice

Marginal is another word for...

• Joint

• Together

• Total

• Frequency

Poll

My confidence on Frequency Tables

• I got it!

• It make 80% sense

• It's okay, little fuzzy

• I'm still confused