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 correlation in a scatter plot indicate?

Back

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

Front

What does a negative correlation in a scatter plot indicate?

Back

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

Front

What is the line of best fit?

Back

The line of best fit is a straight line that best represents the data on a scatter plot, showing the overall trend of the data.

Front

How can you determine the strength of a correlation in a scatter plot?

Back

The strength of a correlation can be determined by how closely the data points cluster around the line of best fit; tighter clusters indicate a stronger correlation.

Front

What does no correlation mean in a scatter plot?

Back

No correlation means that there is no apparent relationship between the two variables; the data points do not show any trend.

Front

What is the purpose of using scatter plots?

Back

Scatter plots are used to visually represent the relationship between two variables, making it easier to identify trends, correlations, and outliers.

Front

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

Back

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

Front

How do you interpret the slope of the line of best fit?

Back

The slope of the line of best fit indicates the rate of change between the two variables; a positive slope means an increase, while a negative slope means a decrease.

Front

What is an outlier in a scatter plot?

Back

An outlier is a data point that lies significantly outside the overall pattern of the data, which can affect the line of best fit.