maths ce mc 92 34

the answer is C

in I, x is distributed uniformly;
in II, x is distributednear the mean mostly;
in III, x is distributed away from the mean mostly.

so, the standard deviation of III is the largest ans that of
II is the smallest, ie S3 bigger than S1 and S1 bigger than S2


it is the solution from the MATHS CE PAPER
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