Question

If mean of the seven observation 28 , 32, x, x+2, x+5, 43, 45, is 38. Find x and find median

Answer 1

Answer:

Mean = Sum of all observations / Total no. of observations

= 28+32+x+x+2+x+5+43+45/7=38

= 155+3x= 38

= 3x=155-38

=3x = 117

x= 117/3

x= 39

So, median

middle term = x+2 = 39+2 = 41

Or,

n=7 (odd number)

Median of an odd number = n+1/2

= 7+1/2= 8/2 = 4th term = x+2= 39+2 =41.

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