Pearson's r is a statistical measure that calculates the strength and direction of the linear relationship between two variables. It ranges from -1 to 1, where values close to 1 indicate a strong positive correlation, values close to -1 indicate a strong negative correlation, and values around 0 suggest no linear correlation. Understanding Pearson's r is crucial when analyzing data, as it provides insights into how changes in one variable may relate to changes in another.
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