 Hello and welcome to the session. My name is Mansi and I'm going to help you with the following question. The question says an analysis of monthly wages paid to workers in two firms A and B belonging to the same industry gives the following results. Now, number of wage earners of firm A are 586 and for firm B are 648. Mean of monthly wages for firm A is Rs 5243 and for firm B is Rs 5243. Variants of the distribution of wages for firm A is 100 for firm B is 121. Now, first part is which firm A or B pays larger amount as monthly wages and second part is which firm A or B shows greater variability in individual wages. Now, here we see that mean of monthly wages for firm A is Rs 5253 and here also we have Rs 5253. So, let us start with the solution to this question. First of all, we see that for firm A monthly wages 78 of wages that is sigma is equal to square root of variance. So that will be equal to square root of 100 and that is equal to variation for firm A will be equal to standard deviation for firm A divided by mean for firm A by 100 that is 10 divided by multiplied by 100. So, this is the coefficient of variation for firm A, firm B we see that number of wage earners is equal to 6.8 multiplied by 5. Variation is equal to sigma that is equal to square root of variance to square root of 121 that is 11. Therefore, of variation B divided by mean for firm B multiplied by 100 and that is 11 divided by 5253 on calculating this we get 0.21. Question was which firm A or B pays out larger amount? The amount is Rs 307. The first part of the question is part was which firm A or B shows greater variability in individual wages. Now, we see that coefficient of variation for firm B is 0.21, 0.19. Since coefficient of variation for firm B is greater than coefficient of variation for firm A, therefore our answer to the second part is also B that is the firm B shows greater variability in individual wages because coefficient of variation for firm B is greater than that of firm A. So, this is our answer to the question. I hope that you understood the question and enjoyed the session. Have a good day.