Scatterplots

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

How do you interpret a scatterplot?

Back

To interpret a scatterplot, look for patterns, trends, and correlations between the two variables. Positive correlation means both variables increase together, negative correlation means one variable increases while the other decreases, and no correlation means no apparent relationship.

Front

What does a positive correlation in a scatterplot 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 scatterplot indicate?

Back

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

Front

What does it mean if a scatterplot shows no correlation?

Back

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

Front

What is the purpose of using a scatterplot?

Back

The purpose of using a scatterplot is to visually represent the relationship between two variables, making it easier to identify trends, patterns, and correlations.

Front

How can you predict values using a scatterplot?

Back

You can predict values by finding the trend line or pattern in the scatterplot and using it to estimate the value of one variable based on the value of the other.

Front

What is a trend line in a scatterplot?

Back

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

Front

What does it mean if the data points in a scatterplot are tightly clustered around a trend line?

Back

If the data points are tightly clustered around a trend line, it indicates a strong correlation between the two variables.

Front

What does it mean if the data points in a scatterplot are widely spread out?

Back

If the data points are widely spread out, it indicates a weak correlation between the two variables.