8.5C/ 8.11A Scatterplots - Association and Relationships

Front

What is a scatterplot?

Back

A scatterplot 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 scatterplot indicate?

Back

A positive association indicates that as one variable increases, the other variable also increases.

Front

What does a negative association in a scatterplot indicate?

Back

A negative association indicates that as one variable increases, the other variable decreases.

Front

What does 'no association' mean in the context of a scatterplot?

Back

'No association' means that there is no discernible relationship between the two variables being plotted.

Front

How can you identify a linear relationship in a scatterplot?

Back

A linear relationship can be identified if the data points form a straight line or a pattern that closely resembles a straight line.

Front

What is the purpose of using scatterplots in data analysis?

Back

Scatterplots are used to visually assess the relationship between two variables, helping to identify trends, correlations, and potential outliers.

Front

What is the difference between correlation and causation?

Back

Correlation indicates a relationship between two variables, while causation implies that one variable directly affects the other.

Front

What does it mean if a scatterplot shows a cluster of points?

Back

A cluster of points indicates that there is a concentration of data values in a specific area, suggesting a potential relationship between the variables.

Front

What is the significance of outliers in a scatterplot?

Back

Outliers are data points that fall far from the other points and can significantly affect the interpretation of the relationship between the variables.

Front

How can you determine the strength of an association in a scatterplot?

Back

The strength of an association can be determined by how closely the data points cluster around a line; tighter clusters indicate stronger associations.