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jadi,
SD = akar (6-5)^ + (7-5)^+ (4-5)^ + (5-5)^ + (3-5)^ dibagi 5
= akar 1^ + 2^ + 1^ + 2^
= akar 1+4+1+4
= akar 10
karena dlm simpangan baku ada tanda mutlak jadi hasil yg negatif akan selalu jadi positif.
semoga membantu :)