10.1 Correlation Practice

Front

What is correlation?

Back

Correlation is a statistical measure that describes the extent to which two variables change together. It can be positive, negative, or no correlation.

Front

What does a positive correlation indicate?

Back

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

Front

What does a negative correlation indicate?

Back

A negative correlation indicates that as one variable increases, the other variable decreases.

Front

What does no correlation mean?

Back

No correlation means that there is no predictable relationship between the two variables.

Front

What is a scatterplot?

Back

A scatterplot is a graph that displays values for typically two variables for a set of data, showing how much one variable is affected by another.

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 the correlation between hours of studying and grades?

Back

There is typically a positive correlation; as hours of studying increase, grades tend to increase.

Front

What is the correlation between the number of days absent from school and math average?

Back

There is typically a negative correlation; as the number of days absent increases, the math average tends to decrease.

Front

What is the conclusion supported by a scatterplot showing no relationship?

Back

The conclusion is that there is no correlation between the two variables being analyzed.