Analyzing 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 the line of best fit represent in a scatter plot?

Back

The line of best fit represents the trend of the data points in a scatter plot, indicating the general direction of the relationship between the variables.

Front

What is a positive correlation?

Back

A positive correlation occurs when an increase in one variable leads to an increase in another variable, resulting in a rising trend in the scatter plot.

Front

What is a negative correlation?

Back

A negative correlation occurs when an increase in one variable leads to a decrease in another variable, resulting in a falling trend in the scatter plot.

Front

What does no correlation mean in a scatter plot?

Back

No correlation means there is no discernible relationship between the two variables, and the data points do not show any clear trend.

Front

What is a nonlinear association?

Back

A nonlinear association occurs when the relationship between two variables cannot be accurately represented by a straight line, often showing curves or other patterns.

Front

How can you identify a positive linear association in a scatter plot?

Back

A positive linear association is identified by data points that cluster around an upward-sloping line.

Front

How can you identify a negative linear association in a scatter plot?

Back

A negative linear association is identified by data points that cluster around a downward-sloping line.

Front

What does it mean if a scatter plot shows a cluster of points?

Back

A cluster of points indicates that there is a strong relationship between the two variables in that region of the graph.

Front

What is the purpose of the line of best fit?

Back

The purpose of the line of best fit is to summarize the relationship between the variables and make predictions based on the data.