Question

If M is the mean of x_{1 ,} x₂ , x₃ , x₄ , x₅ and x₆, prove that (x₁ − M) + (x₂ − M) + (x₃ − M) + (x₄ − M) + (x₅ — M) + (x₆ − M) = 0

Answer 1

Let m be the mean x_{1 ,} x₂ , x₃ , x₄ , x₅ and x₆