scatterplots basics 1

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 plane.

Front

What does a positive association in a scatterplot 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 scatterplot indicate?

Back

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

Front

What is a trend line in a scatterplot?

Back

A trend line is a straight line that best represents the data points in a scatterplot, showing the general direction of the data.

Front

How can you use a trend line to make predictions?

Back

You can extend the trend line to estimate the value of one variable based on the value of the other variable.

Front

What does it mean if a scatterplot has no association?

Back

No association means that there is no discernible pattern or relationship between the two variables.

Front

What is the purpose of a scatterplot?

Back

The purpose of a scatterplot is to visually display the relationship between two variables and to identify any trends or correlations.

Front

How do you identify a linear relationship in a scatterplot?

Back

A linear relationship is identified when the data points form a pattern that can be approximated by a straight line.

Front

What is the significance of outliers in a scatterplot?

Back

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