Correlation coefficients

Front

What does a correlation coefficient of r = -0.3 indicate?

Back

Weak negative correlation.

Front

What is the correlation for a scatter plot that shows a clear upward trend?

Back

Strong Positive.

Front

What is the correlation for a scatter plot that shows a clear downward trend?

Back

Strong Negative.

Front

True or False: The correlation coefficient measures the strength and direction of a linear association between two quantitative variables.

Back

True.

Front

Given a scatter plot, if the points are widely scattered with no discernible pattern, what is the likely correlation?

Back

No Correlation.

Front

What is the range of values for a correlation coefficient?

Back

The range is from -1 to 1.

Front

What does a correlation coefficient of r = 0 indicate?

Back

No correlation.

Front

If r = 0.9, what type of correlation is present?

Back

Strong positive correlation.

Front

If r = -0.45, how would you describe the correlation?

Back

Moderate negative correlation.

Front

What does a correlation coefficient of r = 0.5 suggest about the relationship between two variables?

Back

Moderate positive correlation.