If sigma(x-9) = 0 for data having 5 observations, then what is the value of mean?_ statistics
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Answer= mean (µ)= ∑xi/50=16
standard deviation (σ)=√∑x^2i/50-(µ)^2=16
= (256)*2=∑x^2i/50
New mean
=∑(xi-4)^2/50
=∑x^2i+16*50-8∑xi/50= (256)*2=16-8*16
=400
Marks as Brilliant i hope its helps you
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