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Estudos Gerais • 02/07/2025

S² = Σx².fi - (Σx.fi)² n - 1 xi fi xi.fi xi² xi.fi² 1 2 2 ...

S² = Σx².fi - (Σx.fi)²

n - 1

xi fi xi.fi xi² xi.fi² 1 2 2 1 2 2 5 10 4 20 3 8 27 9 72 4 6 24 16 96 3 3 13 25 75 6 1 15 36 36

S² = Σx².fi - (Σx.fi)² n - 1 xi fi xi.fi xi² xi.fi² 1 2 2 1 2 2 5 10 4 20 3 8 27 9 72 4 6 24 16 96 3 3 13 25 75 6 1 15 36 36
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