Estos datos corresponden al número de niños que nacieron
durante un año, en 60 hospitales comunitarios

No de clase
|
Clase ...............
|
Marca de clase (Mi) ................
|
Frecuencia
(Fi)
|
MiFi
|
(Mi-X)
|
(Mi-X)²
|
(Mi-X)².Fi
|
1
|
80-89
|
84.5
|
4
|
338
|
-32.833
|
1078.005
|
4312.0232
|
2
|
90-99
|
94.5
|
1
|
94.5
|
-22.833
|
521.2089
|
521.2089
|
3
|
100-109
|
104.5
|
9
|
940.5
|
-12.833
|
164.6858
|
1482.1730
|
4
|
110-119
|
114.5
|
23
|
2633.5
|
-2.833
|
8.0258
|
184.5954
|
5
|
120-129
|
124.5
|
11
|
1369.5
|
7.167
|
51.3658
|
565.0247
|
6
|
130-139
|
134.5
|
7
|
941.5
|
17.67
|
294.7058
|
2062.9412
|
7
|
140-149
|
144.5
|
5
|
722.5
|
27.167
|
738.0458
|
3690.2294
|
| No. De clase | Clase | Frecuencia | Mifi | (mifi- x) | (Mi-x)2 | ((Mi-x)2) (fi) |
| 1 | 20 - 25 | 5 | 112.5 | -20.5 | 420.25 | 2101.25 |
| 2 | 26 - 31 | 10 | 285 | -14.5 | 210.25 | 2102.5 |
| 3 | 32 - 37 | 7 | 241.5 | -8.5 | 72.25 | 505.75 |
| 4 | 38 - 43 | 6 | 243 | -2.5 | 6.25 | 37.5 |
| 5 | 44 - 49 | 8 | 372 | 3.5 | 12.65 | 98 |
| 6 | 50 - 55 | 13 | 682.5 | 9.5 | 90.25 | 1163.25 |
| 7 | 56 - 61 | 11 | 643.5 | 15.5 | 2642.75 | |
| 60 | 2580 | 8661 | ||||
| DESVIACION ESTANDAR | ||||||
| S2= (∑ki=1(Mi-Ẋ)fi)/(∑ki=1(fi-1) | ||||||
| s2=8661/60-1= 146.7966 | ||||||
| √ s2 | ||||||
| √ 146.7966 | DESVIACION ESTANDAR= 12.1159 |
| No. De clase | Clase | Limite inferior | Limiter real superior | Marca de clase | Frecuencia | Mifi | Wifi |
| 1 | .9 - 1.7 | 0.95 | 1.75 | 1.75 | 12 | 12 | 21 |
| 2 | 1.8 - 2.6 | 1.75 | 2.65 | 2.2 | 20 | 32 | 62 |
| 3 | 2.7 - 3.5 | 2.65 | 3.55 | 4.45 | 19 | 51 | 85.5 |
| 4 | 3.6 - 4.4 | 3.55 | 4.45 | 4 | 8 | 59 | 32 |
| 5 | 4.5 - 5.3 | 4.45 | 5.35 | 4.9 | 8 | 67 | 39.5 |
| 6 | 5.4 - 6.2 | 5.35 | 6.25 | 5.8 | 5 | 72 | 29 |
| 7 | 6.3 - 7.1 | 6.25 | 7.15 | 6.7 | 3 | 75 | 20.1 |
| 288.8 | |||||||
| Max: 6.8 | Rango: 3.8 | J= 37.5-18 | Ui= 3.55-2.65= 0.9 | MODA=4.45 | |||
| Min: 1.0 | J=18.5/19 | Li= 2.65+0.97(0.97)= 3.52 | MEDIANA= 3.52 | ||||
| J= 0.97 | MEDIA= 288/75= 3.8506 |