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 variables. It shows how two categorical variables relate to each other.

Front

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

Back

To calculate the total number of observations, sum all the frequencies in the table.

Front

What does it mean if two variables have a positive association?

Back

A positive association means that as one variable increases, the other variable also tends to increase.

Front

What does it mean if two variables have a negative association?

Back

A negative association means that as one variable increases, the other variable tends to decrease.

Front

What is an example of no association between two variables?

Back

An example of no association is the number of siblings a person has and their body temperature; these two variables do not influence each other.

Front

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

Back

To find the percentage of a subgroup, divide the frequency of the subgroup by the total number of observations and multiply by 100.

Front

What is the purpose of ordering data after collection?

Back

Ordering data helps to identify patterns, trends, and outliers, making it easier to analyze.

Front

What does it mean if a two-way table shows a high frequency in one category?

Back

A high frequency in one category indicates that many observations fall into that category, suggesting a strong preference or trend.

Front

How can you determine the number of people who purchased no food and no drink from a two-way table?

Back

Look for the cell that represents 'no food' and 'no drink' and read the frequency in that cell.

Front

What is a marginal total in a two-way table?

Back

A marginal total is the sum of the frequencies for a row or a column, showing the total for that category.