Here. weights corresponding to the percentage change in price are given. Therefore, for the calculation of weighted mean the table is prepared as follows:
Weighted mean of percentage change of price:
x̄w = \(\frac{Σwx}{Σw}\)
Putting Σwx = 3779 and Σw = 32 in the formula,
x̄w = \(\frac{3779}{32}\)
∴ x̄w = 118.09%
Hence, weighted mean of percentage change in price = 118.09%.
