The standard deviation is a measure of how much scores differ from their mean. (formula: square root e(sum of the values)x(deviation from the average^2 / n(the number of values)
take all your numbers and arrange them least to greatest
calculate the mean, subtract the mean from each number, square the answer, add all of the squared numbers together, finish the formula
14, 3, -9, 9, 11, -7, -4, -19
take all your numbers and arrange them least to greatest
calculate the mean, subtract the mean from each number, square the answer, add all of the squared numbers together, finish the formula
14, 3, -9, 9, 11, -7, -4, -19