Mean - The sum of all the observation in the dataset divided by the total number of observations, Median - The middle value in an ordered array where half of the total observation are smaller and half of the total observation are greater, Mode - The value in the data set with the highest frequency., Variance - Is the average squared deviation of the observation from the mean., Standard Deviation - A measure of the degree of dispersion of the data from the arithmetic mean. It is also defined as the square root of a variance.,

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