Re: jnu

Posted by Ankit Agrawal on Nov 09, 2012; 6:15am
URL: http://discussion-forum.276.s1.nabble.com/jnu-tp7566949p7579595.html

I guess the answer to the 5th question is b.

In case there are odd number of observations, then the median remains the same.

In case there are even number of observations, the median CHANGES. How?

Let's assume that there are 6 observations. The median would be the average of the THIRD and the FOURTH observation. But if we remove the first and the sixth observation from consideration, the new median would be the average of the SECOND and the THIRD observation. It is known that, while calculating the median, observations are arranged in the ascending order. Hence the second observation will be smaller than the fourth observation.

Ergo, the median will be <=m

Ankit