Regents Exam: Algebra I August 2016 (Problem 6 of 37)

The video tutorial explains the concept of correlation coefficient in the context of a linear model, detailing how it measures the strength and direction of a relationship between two variables. It covers the range of the correlation coefficient, from -1 to 1, and explains the implications of positive, negative, and zero values. The tutorial also describes methods to determine the correlation coefficient, including plotting data points and using graphing calculators. The example provided results in a correlation coefficient of approximately 0.92, indicating a strong positive correlation.

What does the correlation coefficient measure?

What is the range of values for the linear correlation coefficient, r?

What does it indicate if the correlation coefficient, r, is equal to 0?

How can one determine the correlation coefficient visually?

What steps are involved in using a graphing calculator to find the correlation coefficient?