Verified answer

1. The value of the middle-most observation is called the median of the data.

First arrange the given numbers in ascending order,

2,2,3,5,7,9,9,10,11

Here n=9, which is odd.

Where, n is the number of the given number.

∴ median = value of

1/2 (n+1) th observation.

= 1/2(9+1)

= 1/2(10)

=10/2

=5

Then, value of 5 thterm =7

Hence, the median is 7.

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