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 association in a scatter plot indicate?

Back

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

Front

What does a negative association in a scatter plot indicate?

Back

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

Front

What does 'no association' mean in a scatter plot?

Back

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

Front

What is a trend line?

Back

A trend line is a straight line that best represents the data points in a scatter plot, showing the general direction of the data.

Front

What is linear regression?

Back

Linear regression is a statistical method used to model the relationship between two variables by fitting a linear equation to the observed data.

Front

What is a positive linear association?

Back

A positive linear association is when the data points in a scatter plot form a pattern that rises from left to right.

Front

What is a negative linear association?

Back

A negative linear association is when the data points in a scatter plot form a pattern that falls from left to right.

Front

What is a nonlinear association?

Back

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

Front

How can you approximate values using a scatter plot?

Back

You can approximate values by finding the corresponding point on the trend line or by estimating based on the data points.