mean of first 11 multiples of 11 is x and median of that numbers is y. find x:y.
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Answered by
2
Mean = 121 = X
Mode = 121 = Y
X:Y = 121:121
Answered by
0
x : y = 1 : 1
let 11p, 22p, 33p, ...... 121p are 11 multiple of 11.
mean, x = sum of observations/total no of observations
x = (11p + 22p + 33p + 44p ..... + 121p)/11
x = (p + 2p + 3p + 4p + ..... + 11p)/1
x = p[11 × 12/2]
x = 66p
now, median, y = {(n + 1)/2}th observation.
[ if total no of observations is an odd number ]
here, n = 11
so, y = {(11 + 1)/2}th = 6th = 66p
ratio of mean and median = x/y = 66p/66p = 1/1
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