Post on 12-Jan-2016
description
ELEMENTO A.
N° X Xᶺ2
X1 7.125 37,491
X2 3.928 24,265
X3 6.112 26,894
X4 7.025 38,007
X5 5.385 29,008
X6 5.112 24,364
X7 5.085 30,107
X8 5.108 19,061
X9 3.285 19,254
X10 5.655 29,789
TOTAL 53.82 291.241
n=( 40 √10 (291.241 )−(53.82 )2
53.82 )2
n=¿8.73 = APROX. = 9
CONCLUSION: tamaño de muestra n=¿8.73 = APROX. = 9
ELEMENTO B
N° X X^2
X1190,71 36370,3041
X2 168,7 28459,69
X3 148,7 22111,69
X4 193,06 37272,1636
X5 153,66 23611,3956
X6 177,52 31513,3504
X7 150,64 22692,4096
X8 179,63 32266,9369
X9 170,113 28938,4328
X10181,56 32964,0336
TOTAL 1714,29 296200,40
n=( 40 √10 (296200.40 )− (1714.29 )2
1714.29 )2
n=¿12.63 =APROX. = 13
CONCLUSION: debido a que el n arojo un tamaño de muestra de n=¿12.63 =aprox. = 13, se debe volver a tomar los datos con ese valor
ELEMENTO B
N°X
X^2
X1 143,5620609,4736
X2 145,68 21222,6624
X3 157,44 24787,3536
X4 154,23 23786,8929
X5 152,67 23308,1289
X6 155,67 24233,1489
X7 150,64 22692,4096
X8 153,62 23599,1044
X9 147,6 21785,76
X10 157,45 24790,5025
X11 144,35 20836,9225
X12 156,73 24564,2929
X13 163,07 26591,8249
TOTAL 1982,71 302808,477
n=( 40 √13 (302808.47 )−(1982.71 )2
1982.71 )2
n=¿2,18 = APROX. = 3
CONCLUSION: tamaño de muestra n=¿2,18 = APROX. = 3