if the mean of 7 observation in ascending order 20, 28, x, 43, x+2, x+5, 27 is 38. find x and hence the median.
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direct find mean
20+28+x+43+x+2+x+5+27/7=38
125+3x/7=38
125 +3x= 266
3x=266-125
3x=141
x=47
20+28+x+43+x+2+x+5+27/7=38
125+3x/7=38
125 +3x= 266
3x=266-125
3x=141
x=47
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