Question

Dados os números :2;1;5;9;5;7;6;6;4;5;8;3 .Calcule o desvio padrão da amostra

Answer 1

Resposta:

média=(2+1+5+9+5+7+6+6+4+5+8+3)/12 ≈ 5,0833

Variância=V=[(2-5,0833)²+(1-5,0833)²+(5-5,0833)²+(9-5,0833)²+(5-5,0833)²+(7-5,0833)²+(6-5,0833)²+(6-5,0833)²+(4-5,0833)²+(5-5,0833)²+(8-5,0833)²+(3-5,0833)²]/(12-1)

Variância = 5,537878

Desvio Padrão=DP=√V=√5,537878 ≈ 2,2546