Conditional Relative Frequencies and Titanic Survival

What is the main focus of this lesson?

• Determining associations between variables using conditional relative frequencies

• Learning about the history of the Titanic

• Understanding the construction of the Titanic

• Exploring the design of Titanic's lifeboats

How do you calculate a conditional relative frequency?

• By adding all the frequencies together

• By identifying the part and the total for each situation

• By subtracting the total from the part

• By multiplying the part by the total

What is a common misunderstanding when interpreting survival data from the Titanic?

• Thinking the Titanic never sank

• Assuming first-class passengers had no chance of survival

• Believing all passengers had equal survival chances

• Assuming more third-class passengers died because of their class

Why is it important to compare conditional relative frequencies instead of joint frequencies?

• Because conditional frequencies are easier to calculate

• Because joint frequencies are always incorrect

• Because joint frequencies do not account for different group sizes

• Because joint frequencies are not related to survival

What would indicate no association between class and survival on the Titanic?

• Similar survival percentages across all classes

• Higher survival rates for first-class passengers

• Lower survival rates for third-class passengers

• No passengers surviving at all

What percentage of first-class passengers survived?

• 30%

• 41%

• 62%

• 25%

What percentage of second-class passengers survived?

• 30%

• 25%

• 62%

• 41%

What percentage of third-class passengers survived?

• 25%

• 41%

• 62%

• 30%

What conclusion can be drawn about the relationship between class and survival?

• Class had no impact on survival

• All classes had equal survival rates

• There is a significant association between class and survival

• Only third-class passengers survived

Which class had the highest survival rate?

• Crew

• Third class

• Second class

• First class