Scatterplots

Front

What is a scatterplot?

Back

A scatterplot is a graph that displays values for typically two variables for a set of data. Each point represents an observation in the dataset.

Front

What does it mean if a scatterplot shows a linear relationship?

Back

A linear relationship in a scatterplot means that the data points can be approximated by a straight line, indicating a consistent relationship between the two variables.

Front

What is a strong association in a scatterplot?

Back

A strong association means that the data points are closely clustered around a line or curve, indicating a strong correlation between the two variables.

Front

What is a weak association in a scatterplot?

Back

A weak association means that the data points are more spread out and do not closely follow a line or curve, indicating a weak correlation between the two variables.

Front

What is a non-linear relationship in a scatterplot?

Back

A non-linear relationship occurs when the data points do not form a straight line, indicating that the relationship between the variables changes in direction or strength.

Front

How can you identify a linear scatterplot?

Back

A linear scatterplot can be identified by a pattern of points that closely follows a straight line, either increasing or decreasing.

Front

What does the x-axis represent in a scatterplot?

Back

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

Front

What does the y-axis represent in a scatterplot?

Back

The y-axis typically represents the dependent variable, which is the variable that is measured or observed.

Front

What is a trendline in a scatterplot?

Back

A trendline is a line that is drawn on a scatterplot to represent the general direction of the data points, helping to visualize the relationship between the variables.

Front

How do you interpret the slope of a trendline?

Back

The slope of a trendline indicates the rate of change between the two variables; a positive slope means that as one variable increases, the other also increases.