JEE Main 2014 — Statistics Question with Solution
JEE Main 2014 (12 Apr Online)
Question
Let and M.D. be the mean and the mean deviation about of observations ,n. If each of the observations is increased by 5 , then the new mean and the mean deviation about the new mean, respectively, are :
Choose an option
Show full solutionCorrect option: B
Correct answer
B, M.D.
Step-by-step explanation
Let be observations, Let be the mean and M.D be the mean deviation about . If each observation is increased by 5 then new mean will be and new M.D. about new mean will be M.D.
Practice this on the real CBT interface
Solve this JEE Main question (and the rest of the Statistics chapter) on PrepSharp's TCS iON-style CBT player — with timer, bookmarks and session analytics.
Solve interactively →About this question
This is a previous-year question from JEE Main 2014, 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.