MisganaGiday MisganaGiday

14-12-2020
Mathematics

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if a+b+c+d=20 and a^2+b^2+c^2+d^2=108 then the variance of the data is?

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Аноним Аноним

14-12-2020

Answer:

I think it's 27 because it's given a²+b²+c²+d²=108

hudafn avatar

So we have to figure out the mean

hudafn avatar

So 108/4=27

hudafn avatar

Hope this helps

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