Two Way Tables and Scatter Plots

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

What does a scatter plot represent?

Back

A scatter plot represents the relationship between two quantitative variables, showing how one variable may change in relation to another.

Front

What is a positive association in a scatter plot?

Back

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

Front

What is a negative association in a scatter plot?

Back

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

Front

What does it mean if there is no association in a scatter plot?

Back

No association means that there is no discernible pattern between the two variables; changes in one do not predict changes in the other.

Front

What is a linear function?

Back

A linear function is a function that graphs to a straight line, indicating a constant rate of change.

Front

What is a nonlinear function?

Back

A nonlinear function is a function that does not graph to a straight line, indicating a variable rate of change.

Front

How do you interpret the slope of a trend line in a scatter plot?

Back

The slope of a trend line indicates the direction and steepness of the relationship between the two variables.

Front

What is the purpose of a trend line in a scatter plot?

Back

A trend line is used to summarize the relationship between the variables and to make predictions based on the data.

Front

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

Back

To calculate the percentage of a subgroup, divide the frequency of the subgroup by the total frequency and multiply by 100.