# I think it is a simple statistics problem: (sum x)^2/T^2 = sum(x^2)/T how can i prove this ?

• I think it is a simple statistics problem: (sum x)^2/T^2 = sum(x^2)/T how can i prove this ?

I think it is a simple statistics problem: (sum x)^2/T^2 = sum ... (sum x)^2/T^2 = sum(x^2)/T how can i prove ... (x) but I am not sure ... (X). I can ...
Positive: 66 %
I think it is a simple statistics problem: (sum x)^2/T ... (sum x)^2/T^2 = sum(x^2)/T how can i prove ... Suppose you have x_1 x_2 x_3 ... method I can ...
Positive: 63 %

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$$\int_0^{2\sqrt3} \frac{dx}{\sqrt{4+x^2}}$$ I solved a) but I can't ... simple but I can't find the ... x)=\sum_{n=0}^\infty \frac1{(2n)!}x^{2n}$$prove ... Read more Positive: 66 % Say we have a function g(x), such that g(x) = ∫f(x)dx. Then say there is another function h(x) such that d/dx [g(x)] = h(x). Suppose after you... Read more Positive: 61 % ...  then by linearity of the expected value we get$$f(t) =E[Y^2]t^2 - 2 E[XY]t + E[X^2] ... end{align*} How can we find \$E(X_{(2)}-X_{(1 ... How can I ...