Scatterplots

Front

What is a scatterplot?

Back

A scatterplot is a graph that shows the relationship between two variables by displaying data points on a two-dimensional axis.

Front

What does a positive correlation indicate in a scatterplot?

Back

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

Front

What does a negative correlation indicate in a scatterplot?

Back

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

Front

What does no correlation mean in a scatterplot?

Back

No correlation means there is no apparent relationship between the two variables; the data points do not follow a pattern.

Front

How can you identify a strong correlation in a scatterplot?

Back

A strong correlation is identified when the data points are closely clustered around a straight line, either positively or negatively.

Front

What is the difference between strong and weak correlation?

Back

Strong correlation means the data points are closely packed around a line, while weak correlation means the points are more spread out.

Front

What is the purpose of using scatterplots?

Back

Scatterplots are used to visually represent the relationship between two quantitative variables and to identify trends or patterns.

Front

What does the slope of the line in a scatterplot represent?

Back

The slope of the line represents the rate of change between the two variables; a positive slope indicates a positive correlation, while a negative slope indicates a negative correlation.

Front

What is an outlier in a scatterplot?

Back

An outlier is a data point that lies far away from the other points in the scatterplot, which can indicate an unusual observation.

Front

How do you interpret a scatterplot with a positive correlation?

Back

In a scatterplot with a positive correlation, as one variable increases, the other variable also increases, indicating a direct relationship.