Matemática básica Ejemplos

$10$ , $11$ , $12$ , $12$ , $13$ , $13$ , $13$ , $14$ , $14$ , $14$ , $15$ , $15$ , $15$ , $15$ , $15$ , $16$ , $16$ , $16$ , $17$ , $17$ , $17$ , $17$ , $18$ , $18$ , $25$

Paso 1

La media de un conjunto de números es la suma dividida por la cantidad de términos.

$\overline{x} = \frac{10 + 11 + 12 + 12 + 13 + 13 + 13 + 14 + 14 + 14 + 15 + 15 + 15 + 15 + 15 + 16 + 16 + 16 + 17 + 17 + 17 + 17 + 18 + 18 + 25}{25}$

Paso 2

Simplifica el numerador.

Toca para ver más pasos...

Paso 2.1

Suma $10$ y $11$ .

$\overline{x} = \frac{21 + 12 + 12 + 13 + 13 + 13 + 14 + 14 + 14 + 15 + 15 + 15 + 15 + 15 + 16 + 16 + 16 + 17 + 17 + 17 + 17 + 18 + 18 + 25}{25}$

Paso 2.2

Suma $21$ y $12$ .

$\overline{x} = \frac{33 + 12 + 13 + 13 + 13 + 14 + 14 + 14 + 15 + 15 + 15 + 15 + 15 + 16 + 16 + 16 + 17 + 17 + 17 + 17 + 18 + 18 + 25}{25}$

Paso 2.3

Suma $33$ y $12$ .

$\overline{x} = \frac{45 + 13 + 13 + 13 + 14 + 14 + 14 + 15 + 15 + 15 + 15 + 15 + 16 + 16 + 16 + 17 + 17 + 17 + 17 + 18 + 18 + 25}{25}$

Paso 2.4

Suma $45$ y $13$ .

$\overline{x} = \frac{58 + 13 + 13 + 14 + 14 + 14 + 15 + 15 + 15 + 15 + 15 + 16 + 16 + 16 + 17 + 17 + 17 + 17 + 18 + 18 + 25}{25}$

Paso 2.5

Suma $58$ y $13$ .

$\overline{x} = \frac{71 + 13 + 14 + 14 + 14 + 15 + 15 + 15 + 15 + 15 + 16 + 16 + 16 + 17 + 17 + 17 + 17 + 18 + 18 + 25}{25}$

Paso 2.6

Suma $71$ y $13$ .

$\overline{x} = \frac{84 + 14 + 14 + 14 + 15 + 15 + 15 + 15 + 15 + 16 + 16 + 16 + 17 + 17 + 17 + 17 + 18 + 18 + 25}{25}$

Paso 2.7

Suma $84$ y $14$ .

$\overline{x} = \frac{98 + 14 + 14 + 15 + 15 + 15 + 15 + 15 + 16 + 16 + 16 + 17 + 17 + 17 + 17 + 18 + 18 + 25}{25}$

Paso 2.8

Suma $98$ y $14$ .

$\overline{x} = \frac{112 + 14 + 15 + 15 + 15 + 15 + 15 + 16 + 16 + 16 + 17 + 17 + 17 + 17 + 18 + 18 + 25}{25}$

Paso 2.9

Suma $112$ y $14$ .

$\overline{x} = \frac{126 + 15 + 15 + 15 + 15 + 15 + 16 + 16 + 16 + 17 + 17 + 17 + 17 + 18 + 18 + 25}{25}$

Paso 2.10

Suma $126$ y $15$ .

$\overline{x} = \frac{141 + 15 + 15 + 15 + 15 + 16 + 16 + 16 + 17 + 17 + 17 + 17 + 18 + 18 + 25}{25}$

Paso 2.11

Suma $141$ y $15$ .

$\overline{x} = \frac{156 + 15 + 15 + 15 + 16 + 16 + 16 + 17 + 17 + 17 + 17 + 18 + 18 + 25}{25}$

Paso 2.12

Suma $156$ y $15$ .

$\overline{x} = \frac{171 + 15 + 15 + 16 + 16 + 16 + 17 + 17 + 17 + 17 + 18 + 18 + 25}{25}$

Paso 2.13

Suma $171$ y $15$ .

$\overline{x} = \frac{186 + 15 + 16 + 16 + 16 + 17 + 17 + 17 + 17 + 18 + 18 + 25}{25}$

Paso 2.14

Suma $186$ y $15$ .

$\overline{x} = \frac{201 + 16 + 16 + 16 + 17 + 17 + 17 + 17 + 18 + 18 + 25}{25}$

Paso 2.15

Suma $201$ y $16$ .

$\overline{x} = \frac{217 + 16 + 16 + 17 + 17 + 17 + 17 + 18 + 18 + 25}{25}$

Paso 2.16

Suma $217$ y $16$ .

$\overline{x} = \frac{233 + 16 + 17 + 17 + 17 + 17 + 18 + 18 + 25}{25}$

Paso 2.17

Suma $233$ y $16$ .

$\overline{x} = \frac{249 + 17 + 17 + 17 + 17 + 18 + 18 + 25}{25}$

Paso 2.18

Suma $249$ y $17$ .

$\overline{x} = \frac{266 + 17 + 17 + 17 + 18 + 18 + 25}{25}$

Paso 2.19

Suma $266$ y $17$ .

$\overline{x} = \frac{283 + 17 + 17 + 18 + 18 + 25}{25}$

Paso 2.20

Suma $283$ y $17$ .

$\overline{x} = \frac{300 + 17 + 18 + 18 + 25}{25}$

Paso 2.21

Suma $300$ y $17$ .

$\overline{x} = \frac{317 + 18 + 18 + 25}{25}$

Paso 2.22

Suma $317$ y $18$ .

$\overline{x} = \frac{335 + 18 + 25}{25}$

Paso 2.23

Suma $335$ y $18$ .

$\overline{x} = \frac{353 + 25}{25}$

Paso 2.24

Suma $353$ y $25$ .

$\overline{x} = \frac{378}{25}$

Paso 3

Divide.

$\overline{x} = 15.12$

Paso 4

La media debería redondearse a una cifra decimal más que los datos originales. Si los datos originales fueran mixtos, redondea a una cifra decimal más que el dato menos preciso.

$\overline{x} = 15.1$

Paso 5

Establece la fórmula para la varianza. La varianza de un conjunto de valores es una medida de la propagación de sus valores.

$s^{2} = \sum_{i = 1}^{n} \frac{{(x_{i} - x_{a v g})}^{2}}{n - 1}$

Paso 6

Establece la fórmula para la varianza de este conjunto de números.

$s = \frac{{(10 - 15.1)}^{2} + {(11 - 15.1)}^{2} + {(12 - 15.1)}^{2} + {(12 - 15.1)}^{2} + {(13 - 15.1)}^{2} + {(13 - 15.1)}^{2} + {(13 - 15.1)}^{2} + {(14 - 15.1)}^{2} + {(14 - 15.1)}^{2} + {(14 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(16 - 15.1)}^{2} + {(16 - 15.1)}^{2} + {(16 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(18 - 15.1)}^{2} + {(18 - 15.1)}^{2} + {(25 - 15.1)}^{2}}{25 - 1}$

Paso 7

Simplifica el resultado.

Toca para ver más pasos...

Paso 7.1

Simplifica el numerador.

Toca para ver más pasos...

Paso 7.1.1

Resta $15.1$ de $10$ .

$s = \frac{{(- 5.1)}^{2} + {(11 - 15.1)}^{2} + {(12 - 15.1)}^{2} + {(12 - 15.1)}^{2} + {(13 - 15.1)}^{2} + {(13 - 15.1)}^{2} + {(13 - 15.1)}^{2} + {(14 - 15.1)}^{2} + {(14 - 15.1)}^{2} + {(14 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(16 - 15.1)}^{2} + {(16 - 15.1)}^{2} + {(16 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(18 - 15.1)}^{2} + {(18 - 15.1)}^{2} + {(25 - 15.1)}^{2}}{25 - 1}$

Paso 7.1.2

Eleva $- 5.1$ a la potencia de $2$ .

$s = \frac{26.01 + {(11 - 15.1)}^{2} + {(12 - 15.1)}^{2} + {(12 - 15.1)}^{2} + {(13 - 15.1)}^{2} + {(13 - 15.1)}^{2} + {(13 - 15.1)}^{2} + {(14 - 15.1)}^{2} + {(14 - 15.1)}^{2} + {(14 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(16 - 15.1)}^{2} + {(16 - 15.1)}^{2} + {(16 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(18 - 15.1)}^{2} + {(18 - 15.1)}^{2} + {(25 - 15.1)}^{2}}{25 - 1}$

Paso 7.1.3

Resta $15.1$ de $11$ .

$s = \frac{26.01 + {(- 4.1)}^{2} + {(12 - 15.1)}^{2} + {(12 - 15.1)}^{2} + {(13 - 15.1)}^{2} + {(13 - 15.1)}^{2} + {(13 - 15.1)}^{2} + {(14 - 15.1)}^{2} + {(14 - 15.1)}^{2} + {(14 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(16 - 15.1)}^{2} + {(16 - 15.1)}^{2} + {(16 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(18 - 15.1)}^{2} + {(18 - 15.1)}^{2} + {(25 - 15.1)}^{2}}{25 - 1}$

Paso 7.1.4

Eleva $- 4.1$ a la potencia de $2$ .

$s = \frac{26.01 + 16.81 + {(12 - 15.1)}^{2} + {(12 - 15.1)}^{2} + {(13 - 15.1)}^{2} + {(13 - 15.1)}^{2} + {(13 - 15.1)}^{2} + {(14 - 15.1)}^{2} + {(14 - 15.1)}^{2} + {(14 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(16 - 15.1)}^{2} + {(16 - 15.1)}^{2} + {(16 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(18 - 15.1)}^{2} + {(18 - 15.1)}^{2} + {(25 - 15.1)}^{2}}{25 - 1}$

Paso 7.1.5

Resta $15.1$ de $12$ .

$s = \frac{26.01 + 16.81 + {(- 3.1)}^{2} + {(12 - 15.1)}^{2} + {(13 - 15.1)}^{2} + {(13 - 15.1)}^{2} + {(13 - 15.1)}^{2} + {(14 - 15.1)}^{2} + {(14 - 15.1)}^{2} + {(14 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(16 - 15.1)}^{2} + {(16 - 15.1)}^{2} + {(16 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(18 - 15.1)}^{2} + {(18 - 15.1)}^{2} + {(25 - 15.1)}^{2}}{25 - 1}$

Paso 7.1.6

Eleva $- 3.1$ a la potencia de $2$ .

$s = \frac{26.01 + 16.81 + 9.61 + {(12 - 15.1)}^{2} + {(13 - 15.1)}^{2} + {(13 - 15.1)}^{2} + {(13 - 15.1)}^{2} + {(14 - 15.1)}^{2} + {(14 - 15.1)}^{2} + {(14 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(16 - 15.1)}^{2} + {(16 - 15.1)}^{2} + {(16 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(18 - 15.1)}^{2} + {(18 - 15.1)}^{2} + {(25 - 15.1)}^{2}}{25 - 1}$

Paso 7.1.7

Resta $15.1$ de $12$ .

$s = \frac{26.01 + 16.81 + 9.61 + {(- 3.1)}^{2} + {(13 - 15.1)}^{2} + {(13 - 15.1)}^{2} + {(13 - 15.1)}^{2} + {(14 - 15.1)}^{2} + {(14 - 15.1)}^{2} + {(14 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(16 - 15.1)}^{2} + {(16 - 15.1)}^{2} + {(16 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(18 - 15.1)}^{2} + {(18 - 15.1)}^{2} + {(25 - 15.1)}^{2}}{25 - 1}$

Paso 7.1.8

Eleva $- 3.1$ a la potencia de $2$ .

$s = \frac{26.01 + 16.81 + 9.61 + 9.61 + {(13 - 15.1)}^{2} + {(13 - 15.1)}^{2} + {(13 - 15.1)}^{2} + {(14 - 15.1)}^{2} + {(14 - 15.1)}^{2} + {(14 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(16 - 15.1)}^{2} + {(16 - 15.1)}^{2} + {(16 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(18 - 15.1)}^{2} + {(18 - 15.1)}^{2} + {(25 - 15.1)}^{2}}{25 - 1}$

Paso 7.1.9

Resta $15.1$ de $13$ .

$s = \frac{26.01 + 16.81 + 9.61 + 9.61 + {(- 2.1)}^{2} + {(13 - 15.1)}^{2} + {(13 - 15.1)}^{2} + {(14 - 15.1)}^{2} + {(14 - 15.1)}^{2} + {(14 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(16 - 15.1)}^{2} + {(16 - 15.1)}^{2} + {(16 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(18 - 15.1)}^{2} + {(18 - 15.1)}^{2} + {(25 - 15.1)}^{2}}{25 - 1}$

Paso 7.1.10

Eleva $- 2.1$ a la potencia de $2$ .

$s = \frac{26.01 + 16.81 + 9.61 + 9.61 + 4.41 + {(13 - 15.1)}^{2} + {(13 - 15.1)}^{2} + {(14 - 15.1)}^{2} + {(14 - 15.1)}^{2} + {(14 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(16 - 15.1)}^{2} + {(16 - 15.1)}^{2} + {(16 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(18 - 15.1)}^{2} + {(18 - 15.1)}^{2} + {(25 - 15.1)}^{2}}{25 - 1}$

Paso 7.1.11

Resta $15.1$ de $13$ .

$s = \frac{26.01 + 16.81 + 9.61 + 9.61 + 4.41 + {(- 2.1)}^{2} + {(13 - 15.1)}^{2} + {(14 - 15.1)}^{2} + {(14 - 15.1)}^{2} + {(14 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(16 - 15.1)}^{2} + {(16 - 15.1)}^{2} + {(16 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(18 - 15.1)}^{2} + {(18 - 15.1)}^{2} + {(25 - 15.1)}^{2}}{25 - 1}$

Paso 7.1.12

Eleva $- 2.1$ a la potencia de $2$ .

$s = \frac{26.01 + 16.81 + 9.61 + 9.61 + 4.41 + 4.41 + {(13 - 15.1)}^{2} + {(14 - 15.1)}^{2} + {(14 - 15.1)}^{2} + {(14 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(16 - 15.1)}^{2} + {(16 - 15.1)}^{2} + {(16 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(18 - 15.1)}^{2} + {(18 - 15.1)}^{2} + {(25 - 15.1)}^{2}}{25 - 1}$

Paso 7.1.13

Resta $15.1$ de $13$ .

$s = \frac{26.01 + 16.81 + 9.61 + 9.61 + 4.41 + 4.41 + {(- 2.1)}^{2} + {(14 - 15.1)}^{2} + {(14 - 15.1)}^{2} + {(14 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(16 - 15.1)}^{2} + {(16 - 15.1)}^{2} + {(16 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(18 - 15.1)}^{2} + {(18 - 15.1)}^{2} + {(25 - 15.1)}^{2}}{25 - 1}$

Paso 7.1.14

Eleva $- 2.1$ a la potencia de $2$ .

$s = \frac{26.01 + 16.81 + 9.61 + 9.61 + 4.41 + 4.41 + 4.41 + {(14 - 15.1)}^{2} + {(14 - 15.1)}^{2} + {(14 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(16 - 15.1)}^{2} + {(16 - 15.1)}^{2} + {(16 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(18 - 15.1)}^{2} + {(18 - 15.1)}^{2} + {(25 - 15.1)}^{2}}{25 - 1}$

Paso 7.1.15

Resta $15.1$ de $14$ .

$s = \frac{26.01 + 16.81 + 9.61 + 9.61 + 4.41 + 4.41 + 4.41 + {(- 1.1)}^{2} + {(14 - 15.1)}^{2} + {(14 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(16 - 15.1)}^{2} + {(16 - 15.1)}^{2} + {(16 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(18 - 15.1)}^{2} + {(18 - 15.1)}^{2} + {(25 - 15.1)}^{2}}{25 - 1}$

Paso 7.1.16

Eleva $- 1.1$ a la potencia de $2$ .

$s = \frac{26.01 + 16.81 + 9.61 + 9.61 + 4.41 + 4.41 + 4.41 + 1.21 + {(14 - 15.1)}^{2} + {(14 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(16 - 15.1)}^{2} + {(16 - 15.1)}^{2} + {(16 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(18 - 15.1)}^{2} + {(18 - 15.1)}^{2} + {(25 - 15.1)}^{2}}{25 - 1}$

Paso 7.1.17

Resta $15.1$ de $14$ .

$s = \frac{26.01 + 16.81 + 9.61 + 9.61 + 4.41 + 4.41 + 4.41 + 1.21 + {(- 1.1)}^{2} + {(14 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(16 - 15.1)}^{2} + {(16 - 15.1)}^{2} + {(16 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(18 - 15.1)}^{2} + {(18 - 15.1)}^{2} + {(25 - 15.1)}^{2}}{25 - 1}$

Paso 7.1.18

Eleva $- 1.1$ a la potencia de $2$ .

$s = \frac{26.01 + 16.81 + 9.61 + 9.61 + 4.41 + 4.41 + 4.41 + 1.21 + 1.21 + {(14 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(16 - 15.1)}^{2} + {(16 - 15.1)}^{2} + {(16 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(18 - 15.1)}^{2} + {(18 - 15.1)}^{2} + {(25 - 15.1)}^{2}}{25 - 1}$

Paso 7.1.19

Resta $15.1$ de $14$ .

$s = \frac{26.01 + 16.81 + 9.61 + 9.61 + 4.41 + 4.41 + 4.41 + 1.21 + 1.21 + {(- 1.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(16 - 15.1)}^{2} + {(16 - 15.1)}^{2} + {(16 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(18 - 15.1)}^{2} + {(18 - 15.1)}^{2} + {(25 - 15.1)}^{2}}{25 - 1}$

Paso 7.1.20

Eleva $- 1.1$ a la potencia de $2$ .

$s = \frac{26.01 + 16.81 + 9.61 + 9.61 + 4.41 + 4.41 + 4.41 + 1.21 + 1.21 + 1.21 + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(16 - 15.1)}^{2} + {(16 - 15.1)}^{2} + {(16 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(18 - 15.1)}^{2} + {(18 - 15.1)}^{2} + {(25 - 15.1)}^{2}}{25 - 1}$

Paso 7.1.21

Resta $15.1$ de $15$ .

$s = \frac{26.01 + 16.81 + 9.61 + 9.61 + 4.41 + 4.41 + 4.41 + 1.21 + 1.21 + 1.21 + {(- 0.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(15 - 15.1)}^{2} + {(16 - 15.1)}^{2} + {(16 - 15.1)}^{2} + {(16 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(17 - 15.1)}^{2} + {(18 - 15.1)}^{2} + {(18 - 15.1)}^{2} + {(25 - 15.1)}^{2}}{25 - 1}$

Paso 7.1.22