Interpreting Two Way Tables and Probability

Front

What is a two-way table?

Back

A two-way table is a statistical table that displays the frequency distribution of variables. It allows for the comparison of two categorical variables.

Front

How do you calculate the total number of observations in a two-way table?

Back

To find the total number of observations, sum all the values in the table.

Front

What is probability?

Back

Probability is a measure of the likelihood that an event will occur, expressed as a number between 0 and 1.

Front

How do you calculate the probability of an event?

Back

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

Front

What does it mean if the probability of an event is 1/20?

Back

It means that there is one favorable outcome for every 20 possible outcomes.

Front

How do you convert a fraction to a percentage?

Back

To convert a fraction to a percentage, divide the numerator by the denominator and then multiply by 100.

Front

What is the formula to find the percentage of a part compared to a whole?

Back

Percentage = (Part / Whole) x 100.

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, helping to analyze the data more effectively.

Front

How can you find missing values in a two-way table?

Back

You can find missing values by using the totals and the known values to set up equations.

Front

What is a categorical variable?

Back

A categorical variable is a variable that can take on one of a limited, fixed number of possible values, assigning each individual or other unit of observation to a particular group.