SOLUTION: The following data relates to daily bill on consumption of a certain commodity for 600 households Daily bills (KSh) 10 - 20 20 - 30 30 - 40 40 - 50 50 - 60 60 - 70 70

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Question 918908: The following data relates to daily bill on consumption of a certain commodity for 600 households
Daily bills (KSh) 10 - 20 20 - 30 30 - 40 40 - 50 50 - 60 60 - 70 70 - 80 80 - 90 90 - 100
No. of households 60 70 110 100 60 50 90 30 30
i) Calculate the mean
ii) Calculate the median
iii) Calculate the standard deviation
iv) Calculate the coefficient of skewness
v) Comment on the skewness of this distribution
vi) Calculate the coefficient of variation

Answer by ewatrrr(24785) (Show Source):
You can put this solution on YOUR website!

Hi
Mid f M*f M - m (M - m)^2 f(M - m)^2
15 60 900 -34 1156 69360
25 70 1750 -24 576 40320
35 110 3850 -14 196 21560
45 100 4500 -4 16 1600
50 60 3000 1 1 60
65 50 3250 16 256 12800
75 90 6750 26 676 60840
85 30 2550 36 1296 38880
95 30 2850 46 2116 63480
600 29400 308900
49 mean 515.6928214
22.70887492 sd
mean = 49
median = 46
sd = 22.7
P = 3(49-46)/22.7
CV =

SOLUTION: The following data relates to daily bill on consumption of a certain commodity for 600 households Daily bills (KSh) 10 - 20 20 - 30 30 - 40 40 - 50 50 - 60 60 - 70 70 - 80 80 -