Question

The mean of five observation is 21.If 14,23,25,and 17 are four observation ,find the fifth observation

Answer 1

let fifth observation be 'x'

sum of observations

mean =---------------------------------------

no.of observations

14+23+25+17+x

21=------------------------------

5

79+x

21=--------

5

79+x=105

X=105-79=26

fifth observation is 26

Answer 2

Answer:

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