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Discrete Series ; ency distribution:, Q.30. Calculate Mean and variance for the following oe ee oo ame, 5 6, % eee ee 4g, pk eee Sg. fie” 2h 1 iz ee, nS, , Continuous Series ing data:, Q.31. Calculate Mean and Standard Deviation from the following :, , Marks (Above) : 0 10 20 30 40 50 60 70, No. of Students : 100 90 75 50 25 15 5 ‘ 0, [X = 31, SD. = 1593, Q.32. Calculate Mean, Standard Deviation and Variance:, Variable : O05 510 10-15 15-20 20-25 25-30 30-35 3540, Frequency : 2 5 7 13 21 16 8 3, [X = 219, $.D. = 7.95, o = 63.29), , Q.33, Calculate the Coefficient of Variation for the following distribution of the wages of 200, workers in a factory:, , Wages (in %) : 40-49 50-59 60-69 70-79 80-89 90-99 100-109 110-119, Noi of Workers: 11-28-4060 3596 9 6, [X = 74.45, S.D. = 15.921, CV. = 21.38%), Q.34. Calculate the arithmetic mean, standard deviation and variance from the following distribution:, Css > 9S E10 1015 15-90) 20-35 Seay) apse, Frequency : 2 5 Z 13. 21 16 8 3, [X = 21.9, SD. = 7.99, o = 6357], 35. Calculate arithmetic mean, standard deviation and variance from the following series:, Marks +00 70-80 60-70 50-60 40-50 30-40 20-30, No. of Students: 7 n 2 0 G 5, , (X = 51.67, sp, = 15.13, 0? = 2894