Tentukan Standar deviasi/Simpangan baku dari data berikut: 2, 3, 6, 8, 11

Tentukan Standar deviasi/Simpangan baku dari data berikut:
2, 3, 6, 8, 11

Nilai Rata–Rata $= frac{2 + 3 + 6 + 8 + 11}{5} = frac{30}{5} = 6$

Nilai Variansi

${s}^{2} = frac{ {(2 - 6)}^{2} + {(3 - 6)}^{2} + {(6 - 6)}^{2} + {(8 - 6)}^{2} + {(11 - 6)}^{2} }{5}$

${s}^{2} = frac{ {( - 4)}^{2} + {( - 3)}^{2} + {(0)}^{2} + {(2)}^{2} + {(5)}^{2} }{5}$

${s}^{2} = frac{16 + 9 + 0 + 4 + 25}{5}$

${s}^{2} = frac{54}{5}$

${s}^{2} = 10.8$

Nilai Simpangan Baku

SB = $sqrt{ {s}^{2} } = sqrt{10.8} = 3.29$