Estattistica

Valor das diárias Número de pessoas

201 ' 211 1

211 '221 4

221 ' 231 8

231 ' 241 15

241 '251 6

251 '261 2

classe f Frel x fac

201 ' 211 1 2,78% 206 1

211 '221 4 11,11% 216 5

221 ' 231 8 22,22% 226 13

231 ' 241 15 41,67% 236 28

241 '251 6 16,67% 246 34

251 '261 2 5,56% 256 36

∑f= 36 100,01%

classe f x xf x-Ẋ ( x - Ẋ ) ² (x - x )² 1

201 ' 211 1 206 206 -27,50 756,2500 756,2500

211 '221 4 216 864 -17,50 306,2500 122,5000

221 ' 231 8 226 1808 -7,50 56,2500 450,0000

231 ' 241 15 236 3540 2,50 6,2500 93,7500

241 '251 6 246 1476 12,50 156,2500 937,5000

251 '261 2 256 512 22,50 506,2500 101,2500

36 8406 3.372,5000

média amostral=233,50

variancia amostral=96,3571

desvio padrão= 9,81

223,69 l----------l----------l243,31

233,5

0 196

1 206

4 216

8 226

15 236

6 246

2 256

0 266

LAMPADA DA MARCA A

684 697 720 773 821

831 835 848 852 852

859 860 868 879 876

893 899 905 909 911

922 924 326 926 938

939 943 946 954 971

972 977 984 1005 1014

1016 1041 1052 1080 1093

N= TAMANHO DA AMOSTRA = 39

R= AMPLITUDE TOTAL = 1093 -684 = 409

K= NUMERO DE CLASSE= = 6 -> LINHAS

H= AMPLITUDE DAS CLASSES = 70

CLASSES F Frel X Fac

680 Ⱶ 750 3 7,69% 715 3

750 Ⱶ 820 1 2,56% 785 4

820 Ⱶ 890 11 28,21% 855 15

890 Ⱶ 960 13 33,33% 925 28

960 Ⱶ 1030 7 17,95% 995 35

1030 Ⱶ 1100 4 10,26% 1065 39

∑F = 39 100%

CLASSES F X XF X-Ẋ (x-Ẋ)² (x-x)²1

680 Ⱶ 750 3 715 2145 -197,44 389,8256 672,7041

750 Ⱶ 820 1 785 785 -127,44 162,4095 162,4095

820 Ⱶ 890 11 855 9405 -57,44 32,9935 362,9285

890 Ⱶ 960 13 925 12025 12,56 15,7754 205,0802

960 Ⱶ 1030 7 995 6965 82,56 68,1615 477,1305

1030 Ⱶ 1100 4 1065 4260 152,56 232,7455 930,9820

∑F = 39 ∑xf=35585 ∑(X-Ẋ)²F=2.811,2340

MEDIA