Electricity Energy consumptions if the form of energy consumption that uses electric energy.Global electricity consumption continues to increase faster than world population, leading toan increase in the average amount of electricity consumed per person (per capita electricityconsumption)A survey is conducted for 56 families of a colony A. The following tables gives the weeklyconsumption of electricity of these families.40-50Weekly consumption in unitsNo. of Families0-101510-201220-301830-40650-601The similar survey is conducted for 80 families of colony B and the data is recorded as below:30-40Weekly consumption (in units)No. of Families0-10010-20520-301040-504050-60520Refer to data received from Colony Ah(a) The median weekly consumption is:(1) 12 units(ii) 16 units(iii) 20.56 units(iv) None of these(b) The mean weekly consumption is:(i) 20.53 units (i) 22.5 units(iii) 26 units(iv) None of these​