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 is correlation in the context of scatter plots?

Back

Correlation refers to the strength and direction of a linear relationship between two variables.

Front

What is a trend line?

Back

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

Front

What does no association mean in a scatter plot?

Back

No association means there is no discernible relationship between the two variables; the data points are scattered randomly.

Front

What is a positive correlation?

Back

A positive correlation occurs when two variables move in the same direction, meaning that an increase in one variable corresponds to an increase in the other.

Front

What is a negative correlation?

Back

A negative correlation occurs when two variables move in opposite directions, meaning that an increase in one variable corresponds to a decrease in the other.

Front

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

Back

A linear association can be identified if the data points roughly form a straight line, either increasing or decreasing.

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.