7.56 Ten competitors in a beauty contest are ranked by three judges in the following order: ist judge 10 * Co 20 judge 2 co 10 NA AUTO 160 00 00 - 30 judge No 10 Use the Rank correlation to determine which pair of judges has the nearest approach to common taste in beauty. 7.42 Calculate the coefficient of correlation between age and sum assured from the data given below and comment on the value. Sum assured in Rs lakh Age group 10 15 20 Total 20-30 15 30-40 10 WN WA NW UT ") CO N NO W OF 1 I N 40-50 18 50-60 12 16 50 Total 15 taiwan and the amounts of annual 37 Find the coefficient of correlation between the age and the sum assured from the following table: Sum Assured in Rs '000 Age Group (years) 10 20 30 40 50 20-30 3 7 30-40 8 15 V NA IN - - 40-50 12 6 00 W 2 50-60 16.42 Obtain the two lines of regression for the following bivariate frequency distribution: Sales Revenue Adv. Exp. ('000 RS) ('000 RS) 5-15 15-25 25-35 35-45 Total 75-125 5 125-175 16 AN - 10 175-225 9 225-275 40 Total 13 11 158 An article in Concrete Research presented data on compressive strength, x, and intrinsic permeability, y, of various concrete mixes and cures. Summary quantities are n = 14, Zy; = 572, Zy, = 23530, Ex; = 43, Ex, = 157.42 and Exy; = 1697.80. Assume that the two variables are related according to the simple linear regression model. Calculate the least square estimates of the slope and intercept