Scatter Plots

Front

What is a scatter plot?

Back

A scatter plot is a graph that shows the relationship between two quantitative variables by displaying data points on a two-dimensional axis.

Front

What does a positive correlation in a scatter plot indicate?

Back

A positive correlation indicates that as one variable increases, the other variable also increases.

Front

What does a negative correlation in a scatter plot indicate?

Back

A negative correlation indicates that as one variable increases, the other variable decreases.

Front

What does 'no correlation' mean in the context of a scatter plot?

Back

No correlation means there is no discernible relationship between the two variables; changes in one do not affect the other.

Front

What is the y-axis typically used for in a scatter plot?

Back

The y-axis typically represents the dependent variable, which is the outcome being measured.

Front

What is the x-axis typically used for in a scatter plot?

Back

The x-axis typically represents the independent variable, which is the variable being manipulated or changed.

Front

How can you determine the type of correlation from a scatter plot?

Back

You can determine the type of correlation by observing the direction of the data points: upward slope indicates positive correlation, downward slope indicates negative correlation, and scattered points indicate no correlation.

Front

What is an example of a positive correlation in real life?

Back

An example of a positive correlation is the relationship between study time and test scores; generally, more study time leads to higher test scores.

Front

What is an example of a negative correlation in real life?

Back

An example of a negative correlation is the relationship between the age of a car and its value; as the car gets older, its value typically decreases.

Front

What does it mean if a scatter plot shows a nonlinear association?

Back

A nonlinear association means that the relationship between the variables does not follow a straight line; it may curve or change direction.