1 Find the mean average of the set. If the greater values of one variable mainly correspond with the greater values of the other variable and the same holds for the lesser values that is the variables tend to show similar behavior the covariance is positive. So start by working out the mean of the set of values.
Therefore the difference between Variance and the Standard Difference is that the Variance is The average of the squared differences from the Mean and the Standard Deviation is its square-root.
Work out the Mean the simple average of the numbers Then for each number. If the greater values of one variable mainly correspond with the greater values of the other variable and the same holds for the lesser values that is the variables tend to show similar behavior the covariance is positive. If y is inversely proportional to x and k is a constant the equation is of the form. Then for each number subtract the mean and square the result.