Probability and Data Interpretation

The video tutorial explains how to use and interpret two-way tables, a method for representing two types of information. It covers completing tables with given data, analyzing the data to answer questions, and provides examples using leisure activities and survey data. The tutorial also discusses calculating probabilities and identifying modal groups within the data.

What is the primary purpose of a two-way table?

• To represent a single type of information

• To solve algebraic equations

• To calculate probabilities

• To represent two different types of information

In a two-way table, where is the total number of people typically placed?

• Bottom right corner

• Top right corner

• Bottom left corner

• Top left corner

If there are 45 males in an office of 100 people, how many are females?

• 55

• 45

• 35

• 65

How do you calculate the probability of selecting a right-handed female from the office?

• Divide the number of right-handed females by the total number of people

• Divide the number of females by the total number of people

• Divide the number of right-handed people by the total number of people

• Divide the number of right-handed females by the number of males

What is the simplified fraction of left-handed men out of all men?

• 1/5

• 2/5

• 3/5

• 1/4

Which group is the modal group in the first two-way table example?

• Left-handed females

• Left-handed males

• Right-handed females

• Right-handed males

In the leisure activities table, what is the total number of people surveyed?

• 200

• 180

• 166

• 150

Which group has the highest number in the leisure activities table?

• Adults who go to the gym

• Children who swim

• Children who play tennis

• OAPs who swim

What fraction of children go to the gym in the leisure activities table?

• 1/11

• 1/10

• 1/9

• 1/8

In the boys and girls table, what percentage of the total surveyed were boys who went to school?

• 80%

• 50%

• 60%

• 70%