Q.

If the median of the observations 19, 21, 23, 35, 37, x, x+2, 71, 79, 80, 92, 95 arranged in ascending order is 50. Find the value of ‘x’.

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a

48

b

53

c

51

d

49

answer is A.

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Detailed Solution

19, 21, 23, 35, 37, x, x+2, 71, 79, 80, 92, 95

Number of observations are n=2

 median is Average of  nth2,(n2+1)th terms 

Median is Average of   12th2,(126+1)th  terms

Median is Average of 6th,7th

Median =  average of 6th,7th  terns is =n+n+22=50

2n+2=100

x=49

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