Math, asked by razakphatangmailcom, 1 year ago

the mean of x+y observation x_y find the sum of all observation

Answers

Answered by mysticd
1
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.

:)
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