Scatterplots Correlation

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 correlation mean in statistics?

Back

Correlation refers to the statistical relationship between two variables, indicating how one variable may change in relation to another.

Front

What is a positive correlation?

Back

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

Front

What is a negative correlation?

Back

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

Front

What does no correlation mean?

Back

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

Front

How can you identify a positive correlation in a scatterplot?

Back

In a scatterplot, a positive correlation is identified by points that trend upwards from left to right.

Front

How can you identify a negative correlation in a scatterplot?

Back

In a scatterplot, a negative correlation is identified by points that trend downwards from left to right.

Front

What is a linear relationship?

Back

A linear relationship is a relationship between two variables that can be represented by a straight line on a scatterplot.

Front

What is a non-linear relationship?

Back

A non-linear relationship is a relationship between two variables that cannot be represented by a straight line; it may curve or change direction.

Front

What is the purpose of a trend line in a scatterplot?

Back

A trend line is used to summarize the relationship between the variables and to predict future values.