Relative Frequency and Data Interpretation

The video tutorial covers two-way frequency tables, focusing on relative frequency. It explains how to complete a two-way frequency table using a beach survey example and how to convert it into a relative frequency table. The tutorial also demonstrates how to use these tables to answer questions about data, using a second example involving allowance and chores.

What is the main focus of today's lesson?

• Understanding two-way frequency tables

• Discussing beach activities

• Learning about relative frequency

• Reviewing Spring Break activities

How many people were surveyed at the beach?

• 50

• 30

• 40

• 60

What is the total number of males who like to swim and surf?

• 9

• 15

• 11

• 20

How do you calculate the total number of people who like to walk or run?

• Add the number of males and females who like to walk or run

• Subtract the number of males from females

• Multiply the number of males by females

• Divide the number of males by females

What is the difference between a regular frequency table and a relative frequency table?

• Regular frequency tables are for males, relative frequency tables are for females

• Regular frequency tables show counts, relative frequency tables show percentages

• Regular frequency tables are for beach activities, relative frequency tables are for chores

• Regular frequency tables use decimals, relative frequency tables use whole numbers

What is the relative frequency of males who swim and surf?

• 0.46

• 0.22

• 0.18

• 0.54

How do you convert a decimal to a percentage?

• Divide by 100

• Add 10

• Subtract 10

• Multiply by 100

What is the relative frequency of females who prefer to swim or surf?

• 0.22

• 0.18

• 0.54

• 0.46

In the new example, how many students do chores and receive an allowance?

• 50

• 36

• 35

• 30

What is the relative frequency of students who do not do chores and do not receive an allowance?

• 0.36

• 0.12

• 0.18

• 0.28