The formula is very simple - you add up all the given numbers calculate the arithmetic sum and divide the result by the number of numbers. Mean sum of data of data points Heres the same formula written more formally. The total numbers in this data set are 98.
If all the weights are equal then the weighted mean and arithmetic mean will be the same.
Add then subtract 1 from the result value. 3 thoughts on Formulae that will be given in SPM Add Maths Erisa says. Maths Formulas Sometimes Math is Fun and sometimes it could be a surprising fact too. Consider the large set of data D 101 102 198.