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 no association mean in a scatterplot?

Back

No association means that there is no discernible relationship between the two variables; the points do not show any pattern.

Front

What is a nonlinear association?

Back

A nonlinear association occurs when the relationship between two variables cannot be accurately represented by a straight line.

Front

How can you identify a negative correlation in a scatterplot?

Back

A negative correlation is identified when the points on the scatterplot slope downwards from left to right.

Front

What is the purpose of using scatterplots in data analysis?

Back

Scatterplots are used to visually assess the relationship between two quantitative variables and to identify trends, patterns, or correlations.

Front

What does it mean to make a prediction using a scatterplot?

Back

Making a prediction using a scatterplot involves estimating the value of one variable based on the value of another variable, using the trend shown in the plot.

Front

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

Back

The slope indicates the direction and strength of the relationship between the two variables; a steeper slope indicates a stronger relationship.

Front

What is the significance of outliers in a scatterplot?

Back

Outliers are points that fall far from the trend of the data; they can indicate variability in the data or errors in measurement.