Chapter 14.5, Problem 1LC

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8th Edition

Frederick J Gravetter + 1 other

ISBN: 9781133956570

Textbook Problem

Describe what is measured by a Spearman correlation, and explain how this correlation is different from the Pearson correlation.

To determine

**To describe:** The measures of spearman correlation and explain the difference between correlation by spearman and Pearson’s.

Explanation

**Justification:**

*Pearson correlation coefficient:*

The Pearson correlation coefficient is a number between -1 and +1 that measures both the strength and direction of the linear relationship between two variables. The magnitude of the number represents the strength of the correlation.

Pearson correlation measures the linear relationship i.e. charge in one variable is associated with a proportional change in another type of variable for example, this correlation can be used to measure the effect of increase of temperature on the length of the iron scale.

*Spearman correlation coefficient:*

Spearman correlation is a special case of Pearson correlation with data from an ordinal scale (on the ranking basis)...

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