The weighted mean (WM) is computed by the formula ?

For a continuous series the mean is computed by the following formula

For a continuous series the mode is computed by the formula

For a frequency distribution, standard deviation is computed by applying the formula :

For a frequency distribution, 7th decile is computed by the formula :

For a frequency distribution 7th decile is computed by the formula

For a frequency distribution 7th decile is computed by the formula

For a frequency distribution, standard deviation is computed by applying the formula

Equivalent weight of the reaction is same as its formula weight or molecular weight in case of the conversion__________

Compute the simple and weighted mean of the monthly salary from the following data :