Simpangan baku dari data 20,25,23,21,24,25
Jawaban Terkonfirmasi
Simpangan Baku Data Tunggal
20,25,23,21,24,25
banyak data = n = 6
jumlah data = ∑xi = 138
rata X = 138/6 = 23
s² = [(23-20)² +(23-25)² +(23-23)²+(23-21)²+(23-24)²+(23-25)²]/6
s² = (9+4+0+4+1+4)/(6)= 22/6 = 11/3
simpangan baku s = √s² = √(11/3) = ¹/₃ √33 = 1,91