Two plants A and B of a factory show following results about the number of workers and the wages paid to them.
`{:(,A,B),("No. of workers",5000,6000),("Average monthly wages","Rs 2500","Rs 2500"),("Variance of distribution of wages",81,100):}`
In which plant, A or B is there greater variability in individual wages?

An analysis of monthly wages paid to the workers in two Firms. A and B belonging to the same industry gave the following results : {:("Particulars","Firm A","Firm B",),("Number of wage-earners",586,648,),("Average monthly wages","Rs.52.5","Rs.47.5",),("Variance of distribution of wages",100,121,):} (i) Which firm, A or B, pay out layer amount as monthly wages ? (ii) In which firm A or B, is there greater variability in individual wages

Consider the following distribution of daily wages of 50 workers of a factory . {:("Daily wages in Rupees","Number of workers"),(200-250,12),(250-300,14),(300-350,8),(350-400,6),(400-500,10):} Find the mean daily wages of the workes of the factory by using an appropriate method .