Correlation Coefficient Practice

Front

What does a correlation coefficient of r = 0 indicate?

Back

No correlation between the variables.

Front

What is the range of possible values for a correlation coefficient?

Back

The range is from -1 to 1.

Front

What does a positive correlation coefficient indicate?

Back

As one variable increases, the other variable also increases.

Front

What does a negative correlation coefficient indicate?

Back

As one variable increases, the other variable decreases.

Front

What is the meaning of a correlation coefficient of r = 1?

Back

Perfect positive correlation.

Front

What is the meaning of a correlation coefficient of r = -1?

Back

Perfect negative correlation.

Front

What does a weak correlation look like on a scatter plot?

Back

Points are spread out and do not form a clear line.

Front

What does a strong correlation look like on a scatter plot?

Back

Points are closely clustered around a straight line.

Front

How can you determine the strength of a correlation?

Back

By looking at the absolute value of the correlation coefficient; closer to 1 indicates stronger correlation.

Front

What is the correlation for a scatter plot with no discernible pattern?

Back

No correlation.