Scatterplots

Front

What is a scatterplot?

Back

A scatterplot is a graphical representation of two variables, showing the relationship between them using points on a Cartesian plane.

Front

What does a positive linear association in a scatterplot indicate?

Back

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

Front

What does a negative linear association in a scatterplot indicate?

Back

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

Front

What does a non-linear association in a scatterplot mean?

Back

A non-linear association means that the relationship between the two variables does not follow a straight line.

Front

What is the purpose of a trend line in a scatterplot?

Back

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

Front

How can you determine the strength of an association in a scatterplot?

Back

The strength of an association can be determined by how closely the points cluster around the trend line; tighter clusters indicate a stronger association.

Front

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

Back

No association means that changes in one variable do not affect the other variable, and the points are scattered randomly.

Front

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

Back

The slope indicates the rate of change between the two variables; a steeper slope means a greater change.

Front

What is the significance of outliers in a scatterplot?

Back

Outliers are points that fall far from the trend line and can indicate anomalies or errors in data collection.

Front

How can scatterplots be used in real-world applications?

Back

Scatterplots can be used in various fields such as science, economics, and social studies to analyze relationships and make predictions.