JEE Main 2009 — Statistics Question with Solution
From: AIEEE 2009
Question
If the mean deviation of number 1, 1 + d, 1 + 2d,........, 1 + 100d from their mean is 255, then the d is
equal to
Choose an option
Show full solutionCorrect option: B
Correct answer
B10.1
Step-by-step explanation
Mean
Mean deviation (M.D)
[ 50d + 49d + 48d + .......d + 0 + ..... + 50d]
Given that M.D = 255
Mean deviation (M.D)
[ 50d + 49d + 48d + .......d + 0 + ..... + 50d]
Given that M.D = 255
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This is a previous-year question from JEE Main 2009, covering the Statistics chapter of Mathematics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.