Scatter plots and Association

Front

What is a scatter plot?

Back

A scatter plot is a graphical representation of two variables where each point represents an observation. It helps to visualize the relationship between the variables.

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 does it mean if there is no correlation in a scatter plot?

Back

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

Front

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

Back

A positive association is identified when the points in the scatter plot trend upwards from left to right.

Front

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

Back

A negative association is identified when the points in the scatter plot trend downwards from left to right.

Front

What is the purpose of analyzing scatter plots?

Back

The purpose of analyzing scatter plots is to determine the type of relationship (if any) between two quantitative variables.

Front

What is the significance of the slope in a scatter plot?

Back

The slope indicates the direction and strength of the relationship between the two variables; a steeper slope indicates a stronger relationship.

Front

What does a scatter plot with a cluster of points indicate?

Back

A cluster of points indicates a strong relationship between the variables, suggesting that they are correlated.

Front

What is the role of outliers in a scatter plot?

Back

Outliers are points that fall far from the general pattern of the data; they can significantly affect the correlation and interpretation of the scatter plot.