Algebra B Two-way tables

Front

What is a two-way table?

Back

A two-way table is a statistical table that displays the frequency distribution of two categorical variables. It helps to analyze the relationship between the two variables.

Front

How do you calculate the probability of an event?

Back

Probability of an event = (Number of favorable outcomes) / (Total number of outcomes).

Front

What does it mean if the probability of an event is 0.195?

Back

It means that there is a 19.5% chance of that event occurring.

Front

What is the total probability of all possible outcomes in a probability distribution?

Back

The total probability of all possible outcomes in a probability distribution is always equal to 1.

Front

How do you find the percentage of a specific group in a two-way table?

Back

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

Front

What is the formula for calculating percentages?

Back

Percentage = (Part / Whole) x 100.

Front

If 30% of girls have blonde hair, what does this indicate?

Back

This indicates that out of every 100 girls, 30 girls have blonde hair.

Front

What does it mean if a two-way table shows that 10% of boys had red hair?

Back

It means that out of all the boys surveyed, 10% of them have red hair.

Front

How can you interpret the data from a two-way table?

Back

You can interpret the data by analyzing the frequencies and calculating probabilities or percentages to understand relationships between the variables.

Front

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

Back

The total row and column provide the overall counts for each category, which helps in calculating probabilities and understanding the distribution.