Using a contingency table to find the conditional probability

The video tutorial explains how to calculate the percentage of males who enjoy reading. It begins by identifying the total number of males and then focuses on those who prefer reading. The calculation involves adding up specific numbers to find the total males and then determining the percentage of those who enjoy reading. The tutorial concludes with advice on rounding numbers and tips for taking tests.

What is the first step in determining the number of males who enjoy reading?

• Adding up the number of males who prefer reading

• Dividing the number of males by the total population

• Subtracting the number of females from the total

• Multiplying the number of males by two

How do you calculate the total number of males?

• By adding the number of males who prefer reading

• By multiplying the number of males by the number of females

• By adding all the given male numbers

• By subtracting the number of females from the total

What is the specific number of males who enjoy reading?

• 54

• 76

• 362

• 302

How is the probability of a male enjoying reading calculated?

• By subtracting the number of males who enjoy reading from the total number of males

• By dividing the total number of males by the number of males who enjoy reading

• By dividing the number of males who enjoy reading by the total number of males

• By multiplying the number of males who enjoy reading by the total number of males

Why is rounding important in tests according to the video?

• To avoid using decimals

• Because tests might require answers to the nearest tenth

• To ensure accuracy in results

• To make calculations easier