Question

the following data arranged is ascending order (9,1012,13,7x,7x+1,17,17,9,21)if the median of the is 14.5 then what is the value of x
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Answer 1

Answer:

total no of observations are 9 so n+1/2 observation is the median

so 9+1/2=10/2 = 5

th observation is 7x is median.

so 7x = 14.5, x = 14.5/7