In R, you can calculate standard deviation using the sd() function. This function takes a vector of numerical values as input and returns the standard deviation of those values. Alternatively, you can also use the var() function to calculate the variance, and then take the square root of the variance to get the standard deviation. Standard deviation is a measure of dispersion or variability in a set of data, indicating how spread out the values are from the mean. It is a useful statistic for understanding the distribution of data and making comparisons between different datasets.

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