Construct index number of industrial production from the following data: IndustryUnitBase yearCurrent YearWeightElectricalMill, Nos.52320Mining Th. Tonnes55210917ManufacturingMill. Nos.22399963
407.92
342.74
509.87
468.36
407.92
P01=∑WR∑W=∑(Q1Q0)×100∑W=20×(235)×100+17×(10955)×100+63×(999223)×100100=407.92