Question

The median of a set of 9 distinct observations is 20.5. If each of the largest 4 observation of the set is increased by 2, then the median of the new set *
Is increased by 2
Is decreased by 2
Is two times the original median
Remains the same as that of the original set​

Answer 1

Step-by-step explanation:

Given that number of observations is 9

Therefore median is (

2

n+1

)

th

value =

2

10

=5

th

value

Given that the largest 4 observations is increased by 2

The last four observations are 9

th

,8

th

,7

th

,6

th

Therefore, the median doesn't change.