Question

x p(x) x.p(x) x-σ (x-σ)2 (x-σ)2 .p(x) 1 0.25 2 0.50 3 0.25 for the following...

x p(x) x.p(x) x-σ (x-σ)2 (x-σ)2 .p(x)
1 0.25
2 0.50
3 0.25

for the following probability distribution find the mean and the standard deviation. (complete the chart above).

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