JEE Main 2016 (Offline) | Statistics Question 109 | Mathematics

The mean of the data set comprising of 16 observations is 16. If one of the observation valued 16 is deleted and three new observations valued 3, 4 and 5 are added to the data, then the mean of the resultant data, is :

15.8

14.0

16.8

16.0

JEE Main 2014 (Offline)

MCQ (Single Correct Answer)

-1

The variance of first 50 even natural numbers is

833

437

$${{437} \over 4}$$

$${{833} \over 4}$$

JEE Main 2013 (Offline)

MCQ (Single Correct Answer)

-1

All the students of a class performed poorly in Mathematics. The teacher decided to give grace marks of 10 to each of the students. Which of the following statistical measures will not change even after the grace marks were given?

median

mode

variance

mean

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