2-way tables

Front

What is a 2-way table?

Back

A 2-way table is a statistical table that displays the frequency distribution of two categorical variables, allowing for the analysis of the relationship between them.

Front

How do you calculate the probability of an event using a 2-way table?

Back

To calculate the probability of an event, divide the frequency of the event by the total number of observations in the table.

Front

What does it mean if a student has a permit in the context of a survey?

Back

Having a permit indicates that the student is in the process of learning to drive but does not yet have a full driver's license.

Front

How do you find the percentage of a subgroup in a 2-way table?

Back

To find the percentage of a subgroup, divide the number of individuals in that subgroup by the total number of individuals surveyed, then multiply by 100.

Front

What is the significance of the total row and column in a 2-way table?

Back

The total row and column provide the overall counts for each category, which are essential for calculating probabilities and percentages.

Front

How can you determine the number of females surveyed from a 2-way table?

Back

You can determine the number of females surveyed by summing the frequencies in the female category across all relevant rows.

Front

What is the formula for calculating conditional probability using a 2-way table?

Back

Conditional probability is calculated as P(A|B) = P(A and B) / P(B), where A is the event of interest and B is the condition.

Front

What does it mean if a probability is expressed as a fraction?

Back

A probability expressed as a fraction indicates the ratio of favorable outcomes to the total number of possible outcomes.

Front

How do you interpret the results of a survey presented in a 2-way table?

Back

Interpreting results involves analyzing the frequencies and probabilities to understand trends and relationships between the variables.

Front

What is the relationship between categorical variables in a 2-way table?

Back

The relationship can be assessed by examining how the frequencies of one variable change in relation to the other variable.