Scatter Plots & Best Fit Lines

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 linear association in a scatter plot indicate?

Back

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

Front

What does a negative linear association in a scatter plot indicate?

Back

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

Front

What does 'no association' mean in the context of scatter plots?

Back

'No association' means that there is no discernible relationship between the two variables being plotted.

Front

What is a line of best fit?

Back

A line of best fit is a straight line that best represents the data on a scatter plot, used to make predictions.

Front

How can you use a line of best fit to make predictions?

Back

You can use the line of best fit to estimate the value of one variable based on the value of another variable.

Front

What is the purpose of analyzing scatter plots?

Back

Analyzing scatter plots helps to identify relationships, trends, and patterns between two variables.

Front

What does it mean if a scatter plot has a nonlinear association?

Back

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

Front

How do you determine the type of correlation in a scatter plot?

Back

You determine the type of correlation by observing the direction and pattern of the data points.

Front

What is the significance of the slope in a line of best fit?

Back

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