the mean of x+y observation x_y find the sum of all observation
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Hi ,
mean = ( sum of observations ) /( number of observations )
mean = [ ( x + y ) + ( x - y ) ] /2
= ( x + y + x - y ) /2
= 2x / 2
= x
I hope this helps you.
:)
mean = ( sum of observations ) /( number of observations )
mean = [ ( x + y ) + ( x - y ) ] /2
= ( x + y + x - y ) /2
= 2x / 2
= x
I hope this helps you.
:)
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