Answer Posted / Vikash Kumar Anand

Correlation is a statistical measure that determines the strength and direction of a linear relationship between two variables. In R, the function cor() can be used to calculate the correlation coefficient. For example, if X and Y are vectors containing data for the two variables, the correlation coefficient (r) can be calculated as follows: r <- cor(X, Y). The value of r ranges from -1 to 1. A value close to 1 indicates a strong positive linear relationship between X and Y, while a value close to -1 indicates a strong negative linear relationship.

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