Scatterplot Relationships

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 a positive correlation indicate in a scatterplot?

Back

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

Front

What does a negative correlation indicate in a scatterplot?

Back

A negative correlation indicates that as one variable increases, the other variable tends to decrease.

Front

What does no correlation mean in a scatterplot?

Back

No correlation means there is no apparent relationship between the two variables; changes in one variable do not predict changes in the other.

Front

What is a linear association in a scatterplot?

Back

A linear association means that the data points can be approximated by a straight line.

Front

What is a nonlinear association in a scatterplot?

Back

A nonlinear association means that the relationship between the variables cannot be accurately represented by a straight line.

Front

How can you identify a strong positive linear association in a scatterplot?

Back

A strong positive linear association is identified when the data points are closely clustered around a straight line that slopes upwards.

Front

How can you identify a weak positive linear association in a scatterplot?

Back

A weak positive linear association is identified when the data points are more spread out but still show an upward trend.

Front

What is the correlation coefficient?

Back

The correlation coefficient is a numerical measure of the strength and direction of a linear relationship between two variables, ranging from -1 to 1.

Front

What does a correlation coefficient of 0 indicate?

Back

A correlation coefficient of 0 indicates no linear relationship between the two variables.