Scatterplots

Front

What is a scatterplot?

Back

A scatterplot is a graphical representation of two variables, showing the relationship between them using points on a Cartesian plane.

Front

What does an outlier represent in a scatterplot?

Back

An outlier is a point that is far outside the main cluster of points/ordered pairs, indicating a significant deviation from the trend.

Front

What is the purpose of a line of best fit in a scatterplot?

Back

The line of best fit summarizes the relationship between the variables, helping to predict values and understand trends.

Front

What does a positive linear association in a scatterplot indicate?

Back

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

Front

What does a negative linear association in a scatterplot indicate?

Back

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

Front

How can you identify a linear relationship in a scatterplot?

Back

A linear relationship can be identified by a pattern of points that closely follow a straight line.

Front

What does the slope of the line of best fit represent?

Back

The slope represents the rate of change between the two variables, indicating how much one variable changes for a unit change in the other.

Front

What is the significance of the correlation coefficient in relation to scatterplots?

Back

The correlation coefficient quantifies the strength and direction of the relationship between two variables, ranging from -1 to 1.

Front

What does a correlation coefficient of 0 indicate?

Back

A correlation coefficient of 0 indicates no linear relationship between the two variables.

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.