Scatter Plots and Trend 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 relationship in a scatter plot indicate?

Back

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

Front

What does a negative relationship in a scatter plot indicate?

Back

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

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, showing the overall trend of the data.

Front

What does correlation refer to in statistics?

Back

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

Front

What is a strong positive correlation?

Back

A strong positive correlation means that the data points are closely clustered around a line that slopes upwards, indicating a strong relationship where both variables increase together.

Front

What is a strong negative correlation?

Back

A strong negative correlation means that the data points are closely clustered around a line that slopes downwards, indicating a strong relationship where one variable increases while the other decreases.

Front

What is a weak correlation?

Back

A weak correlation means that the data points are more spread out and do not closely follow a trend line, indicating a weak relationship between the variables.

Front

What is linear association?

Back

Linear association is a relationship between two variables where the data points can be closely approximated by a straight line.

Front

What does it mean if there is no association between two variables?

Back

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