Matemática discreta Ejemplos

$1.25$ , $1.29$ , $1.92$ , $1.43$ , $1.33$ , $1.48$ , $1.62$ , $1.84$ , $1.87$ , $1.99$ , $1.51$ , $1.271$ , $1.72$ , $1.28$ , $1.55$

Paso 1

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

$\overline{x} = \frac{1.25 + 1.29 + 1.92 + 1.43 + 1.33 + 1.48 + 1.62 + 1.84 + 1.87 + 1.99 + 1.51 + 1.271 + 1.72 + 1.28 + 1.55}{15}$

Paso 2

Simplifica el numerador.

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Paso 2.1

Suma $1.25$ y $1.29$ .

$\overline{x} = \frac{2.54 + 1.92 + 1.43 + 1.33 + 1.48 + 1.62 + 1.84 + 1.87 + 1.99 + 1.51 + 1.271 + 1.72 + 1.28 + 1.55}{15}$

Paso 2.2

Suma $2.54$ y $1.92$ .

$\overline{x} = \frac{4.46 + 1.43 + 1.33 + 1.48 + 1.62 + 1.84 + 1.87 + 1.99 + 1.51 + 1.271 + 1.72 + 1.28 + 1.55}{15}$

Paso 2.3

Suma $4.46$ y $1.43$ .

$\overline{x} = \frac{5.89 + 1.33 + 1.48 + 1.62 + 1.84 + 1.87 + 1.99 + 1.51 + 1.271 + 1.72 + 1.28 + 1.55}{15}$

Paso 2.4

Suma $5.89$ y $1.33$ .

$\overline{x} = \frac{7.22 + 1.48 + 1.62 + 1.84 + 1.87 + 1.99 + 1.51 + 1.271 + 1.72 + 1.28 + 1.55}{15}$

Paso 2.5

Suma $7.22$ y $1.48$ .

$\overline{x} = \frac{8.7 + 1.62 + 1.84 + 1.87 + 1.99 + 1.51 + 1.271 + 1.72 + 1.28 + 1.55}{15}$

Paso 2.6

Suma $8.7$ y $1.62$ .

$\overline{x} = \frac{10.32 + 1.84 + 1.87 + 1.99 + 1.51 + 1.271 + 1.72 + 1.28 + 1.55}{15}$

Paso 2.7

Suma $10.32$ y $1.84$ .

$\overline{x} = \frac{12.16 + 1.87 + 1.99 + 1.51 + 1.271 + 1.72 + 1.28 + 1.55}{15}$

Paso 2.8

Suma $12.16$ y $1.87$ .

$\overline{x} = \frac{14.03 + 1.99 + 1.51 + 1.271 + 1.72 + 1.28 + 1.55}{15}$

Paso 2.9

Suma $14.03$ y $1.99$ .

$\overline{x} = \frac{16.02 + 1.51 + 1.271 + 1.72 + 1.28 + 1.55}{15}$

Paso 2.10

Suma $16.02$ y $1.51$ .

$\overline{x} = \frac{17.53 + 1.271 + 1.72 + 1.28 + 1.55}{15}$

Paso 2.11

Suma $17.53$ y $1.271$ .

$\overline{x} = \frac{18.801 + 1.72 + 1.28 + 1.55}{15}$

Paso 2.12

Suma $18.801$ y $1.72$ .

$\overline{x} = \frac{20.521 + 1.28 + 1.55}{15}$

Paso 2.13

Suma $20.521$ y $1.28$ .

$\overline{x} = \frac{21.801 + 1.55}{15}$

Paso 2.14

Suma $21.801$ y $1.55$ .

$\overline{x} = \frac{23.351}{15}$

Paso 3

Divide $23.351$ por $15$ .

$\overline{x} = 1.5567\overline{3}$

Paso 4

Divide.

$\overline{x} = 1.5567\overline{3}$

Paso 5

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.

$\overline{x} = 1.557$

Paso 6

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 7

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

$s = \frac{{(1.25 - 1.557)}^{2} + {(1.29 - 1.557)}^{2} + {(1.92 - 1.557)}^{2} + {(1.43 - 1.557)}^{2} + {(1.33 - 1.557)}^{2} + {(1.48 - 1.557)}^{2} + {(1.62 - 1.557)}^{2} + {(1.84 - 1.557)}^{2} + {(1.87 - 1.557)}^{2} + {(1.99 - 1.557)}^{2} + {(1.51 - 1.557)}^{2} + {(1.271 - 1.557)}^{2} + {(1.72 - 1.557)}^{2} + {(1.28 - 1.557)}^{2} + {(1.55 - 1.557)}^{2}}{15 - 1}$

Paso 8

Simplifica el resultado.

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Paso 8.1

Simplifica el numerador.

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Paso 8.1.1

Resta $1.557$ de $1.25$ .

$s = \frac{{(- 0.307)}^{2} + {(1.29 - 1.557)}^{2} + {(1.92 - 1.557)}^{2} + {(1.43 - 1.557)}^{2} + {(1.33 - 1.557)}^{2} + {(1.48 - 1.557)}^{2} + {(1.62 - 1.557)}^{2} + {(1.84 - 1.557)}^{2} + {(1.87 - 1.557)}^{2} + {(1.99 - 1.557)}^{2} + {(1.51 - 1.557)}^{2} + {(1.271 - 1.557)}^{2} + {(1.72 - 1.557)}^{2} + {(1.28 - 1.557)}^{2} + {(1.55 - 1.557)}^{2}}{15 - 1}$

Paso 8.1.2

Eleva $- 0.307$ a la potencia de $2$ .

$s = \frac{0.094249 + {(1.29 - 1.557)}^{2} + {(1.92 - 1.557)}^{2} + {(1.43 - 1.557)}^{2} + {(1.33 - 1.557)}^{2} + {(1.48 - 1.557)}^{2} + {(1.62 - 1.557)}^{2} + {(1.84 - 1.557)}^{2} + {(1.87 - 1.557)}^{2} + {(1.99 - 1.557)}^{2} + {(1.51 - 1.557)}^{2} + {(1.271 - 1.557)}^{2} + {(1.72 - 1.557)}^{2} + {(1.28 - 1.557)}^{2} + {(1.55 - 1.557)}^{2}}{15 - 1}$

Paso 8.1.3

Resta $1.557$ de $1.29$ .

$s = \frac{0.094249 + {(- 0.267)}^{2} + {(1.92 - 1.557)}^{2} + {(1.43 - 1.557)}^{2} + {(1.33 - 1.557)}^{2} + {(1.48 - 1.557)}^{2} + {(1.62 - 1.557)}^{2} + {(1.84 - 1.557)}^{2} + {(1.87 - 1.557)}^{2} + {(1.99 - 1.557)}^{2} + {(1.51 - 1.557)}^{2} + {(1.271 - 1.557)}^{2} + {(1.72 - 1.557)}^{2} + {(1.28 - 1.557)}^{2} + {(1.55 - 1.557)}^{2}}{15 - 1}$

Paso 8.1.4

Eleva $- 0.267$ a la potencia de $2$ .

$s = \frac{0.094249 + 0.071289 + {(1.92 - 1.557)}^{2} + {(1.43 - 1.557)}^{2} + {(1.33 - 1.557)}^{2} + {(1.48 - 1.557)}^{2} + {(1.62 - 1.557)}^{2} + {(1.84 - 1.557)}^{2} + {(1.87 - 1.557)}^{2} + {(1.99 - 1.557)}^{2} + {(1.51 - 1.557)}^{2} + {(1.271 - 1.557)}^{2} + {(1.72 - 1.557)}^{2} + {(1.28 - 1.557)}^{2} + {(1.55 - 1.557)}^{2}}{15 - 1}$

Paso 8.1.5

Resta $1.557$ de $1.92$ .

$s = \frac{0.094249 + 0.071289 + {0.363}^{2} + {(1.43 - 1.557)}^{2} + {(1.33 - 1.557)}^{2} + {(1.48 - 1.557)}^{2} + {(1.62 - 1.557)}^{2} + {(1.84 - 1.557)}^{2} + {(1.87 - 1.557)}^{2} + {(1.99 - 1.557)}^{2} + {(1.51 - 1.557)}^{2} + {(1.271 - 1.557)}^{2} + {(1.72 - 1.557)}^{2} + {(1.28 - 1.557)}^{2} + {(1.55 - 1.557)}^{2}}{15 - 1}$

Paso 8.1.6

Eleva $0.363$ a la potencia de $2$ .

$s = \frac{0.094249 + 0.071289 + 0.131769 + {(1.43 - 1.557)}^{2} + {(1.33 - 1.557)}^{2} + {(1.48 - 1.557)}^{2} + {(1.62 - 1.557)}^{2} + {(1.84 - 1.557)}^{2} + {(1.87 - 1.557)}^{2} + {(1.99 - 1.557)}^{2} + {(1.51 - 1.557)}^{2} + {(1.271 - 1.557)}^{2} + {(1.72 - 1.557)}^{2} + {(1.28 - 1.557)}^{2} + {(1.55 - 1.557)}^{2}}{15 - 1}$

Paso 8.1.7

Resta $1.557$ de $1.43$ .

$s = \frac{0.094249 + 0.071289 + 0.131769 + {(- 0.127)}^{2} + {(1.33 - 1.557)}^{2} + {(1.48 - 1.557)}^{2} + {(1.62 - 1.557)}^{2} + {(1.84 - 1.557)}^{2} + {(1.87 - 1.557)}^{2} + {(1.99 - 1.557)}^{2} + {(1.51 - 1.557)}^{2} + {(1.271 - 1.557)}^{2} + {(1.72 - 1.557)}^{2} + {(1.28 - 1.557)}^{2} + {(1.55 - 1.557)}^{2}}{15 - 1}$

Paso 8.1.8

Eleva $- 0.127$ a la potencia de $2$ .

$s = \frac{0.094249 + 0.071289 + 0.131769 + 0.016129 + {(1.33 - 1.557)}^{2} + {(1.48 - 1.557)}^{2} + {(1.62 - 1.557)}^{2} + {(1.84 - 1.557)}^{2} + {(1.87 - 1.557)}^{2} + {(1.99 - 1.557)}^{2} + {(1.51 - 1.557)}^{2} + {(1.271 - 1.557)}^{2} + {(1.72 - 1.557)}^{2} + {(1.28 - 1.557)}^{2} + {(1.55 - 1.557)}^{2}}{15 - 1}$

Paso 8.1.9

Resta $1.557$ de $1.33$ .

$s = \frac{0.094249 + 0.071289 + 0.131769 + 0.016129 + {(- 0.227)}^{2} + {(1.48 - 1.557)}^{2} + {(1.62 - 1.557)}^{2} + {(1.84 - 1.557)}^{2} + {(1.87 - 1.557)}^{2} + {(1.99 - 1.557)}^{2} + {(1.51 - 1.557)}^{2} + {(1.271 - 1.557)}^{2} + {(1.72 - 1.557)}^{2} + {(1.28 - 1.557)}^{2} + {(1.55 - 1.557)}^{2}}{15 - 1}$

Paso 8.1.10

Eleva $- 0.227$ a la potencia de $2$ .

$s = \frac{0.094249 + 0.071289 + 0.131769 + 0.016129 + 0.051529 + {(1.48 - 1.557)}^{2} + {(1.62 - 1.557)}^{2} + {(1.84 - 1.557)}^{2} + {(1.87 - 1.557)}^{2} + {(1.99 - 1.557)}^{2} + {(1.51 - 1.557)}^{2} + {(1.271 - 1.557)}^{2} + {(1.72 - 1.557)}^{2} + {(1.28 - 1.557)}^{2} + {(1.55 - 1.557)}^{2}}{15 - 1}$

Paso 8.1.11

Resta $1.557$ de $1.48$ .

$s = \frac{0.094249 + 0.071289 + 0.131769 + 0.016129 + 0.051529 + {(- 0.077)}^{2} + {(1.62 - 1.557)}^{2} + {(1.84 - 1.557)}^{2} + {(1.87 - 1.557)}^{2} + {(1.99 - 1.557)}^{2} + {(1.51 - 1.557)}^{2} + {(1.271 - 1.557)}^{2} + {(1.72 - 1.557)}^{2} + {(1.28 - 1.557)}^{2} + {(1.55 - 1.557)}^{2}}{15 - 1}$

Paso 8.1.12

Eleva $- 0.077$ a la potencia de $2$ .

$s = \frac{0.094249 + 0.071289 + 0.131769 + 0.016129 + 0.051529 + 0.005929 + {(1.62 - 1.557)}^{2} + {(1.84 - 1.557)}^{2} + {(1.87 - 1.557)}^{2} + {(1.99 - 1.557)}^{2} + {(1.51 - 1.557)}^{2} + {(1.271 - 1.557)}^{2} + {(1.72 - 1.557)}^{2} + {(1.28 - 1.557)}^{2} + {(1.55 - 1.557)}^{2}}{15 - 1}$

Paso 8.1.13

Resta $1.557$ de $1.62$ .

$s = \frac{0.094249 + 0.071289 + 0.131769 + 0.016129 + 0.051529 + 0.005929 + {0.063}^{2} + {(1.84 - 1.557)}^{2} + {(1.87 - 1.557)}^{2} + {(1.99 - 1.557)}^{2} + {(1.51 - 1.557)}^{2} + {(1.271 - 1.557)}^{2} + {(1.72 - 1.557)}^{2} + {(1.28 - 1.557)}^{2} + {(1.55 - 1.557)}^{2}}{15 - 1}$

Paso 8.1.14

Eleva $0.063$ a la potencia de $2$ .

$s = \frac{0.094249 + 0.071289 + 0.131769 + 0.016129 + 0.051529 + 0.005929 + 0.003969 + {(1.84 - 1.557)}^{2} + {(1.87 - 1.557)}^{2} + {(1.99 - 1.557)}^{2} + {(1.51 - 1.557)}^{2} + {(1.271 - 1.557)}^{2} + {(1.72 - 1.557)}^{2} + {(1.28 - 1.557)}^{2} + {(1.55 - 1.557)}^{2}}{15 - 1}$

Paso 8.1.15

Resta $1.557$ de $1.84$ .

$s = \frac{0.094249 + 0.071289 + 0.131769 + 0.016129 + 0.051529 + 0.005929 + 0.003969 + {0.283}^{2} + {(1.87 - 1.557)}^{2} + {(1.99 - 1.557)}^{2} + {(1.51 - 1.557)}^{2} + {(1.271 - 1.557)}^{2} + {(1.72 - 1.557)}^{2} + {(1.28 - 1.557)}^{2} + {(1.55 - 1.557)}^{2}}{15 - 1}$

Paso 8.1.16

Eleva $0.283$ a la potencia de $2$ .

$s = \frac{0.094249 + 0.071289 + 0.131769 + 0.016129 + 0.051529 + 0.005929 + 0.003969 + 0.080089 + {(1.87 - 1.557)}^{2} + {(1.99 - 1.557)}^{2} + {(1.51 - 1.557)}^{2} + {(1.271 - 1.557)}^{2} + {(1.72 - 1.557)}^{2} + {(1.28 - 1.557)}^{2} + {(1.55 - 1.557)}^{2}}{15 - 1}$

Paso 8.1.17

Resta $1.557$ de $1.87$ .

$s = \frac{0.094249 + 0.071289 + 0.131769 + 0.016129 + 0.051529 + 0.005929 + 0.003969 + 0.080089 + {0.313}^{2} + {(1.99 - 1.557)}^{2} + {(1.51 - 1.557)}^{2} + {(1.271 - 1.557)}^{2} + {(1.72 - 1.557)}^{2} + {(1.28 - 1.557)}^{2} + {(1.55 - 1.557)}^{2}}{15 - 1}$

Paso 8.1.18

Eleva $0.313$ a la potencia de $2$ .

$s = \frac{0.094249 + 0.071289 + 0.131769 + 0.016129 + 0.051529 + 0.005929 + 0.003969 + 0.080089 + 0.097969 + {(1.99 - 1.557)}^{2} + {(1.51 - 1.557)}^{2} + {(1.271 - 1.557)}^{2} + {(1.72 - 1.557)}^{2} + {(1.28 - 1.557)}^{2} + {(1.55 - 1.557)}^{2}}{15 - 1}$

Paso 8.1.19

Resta $1.557$ de $1.99$ .

$s = \frac{0.094249 + 0.071289 + 0.131769 + 0.016129 + 0.051529 + 0.005929 + 0.003969 + 0.080089 + 0.097969 + {0.433}^{2} + {(1.51 - 1.557)}^{2} + {(1.271 - 1.557)}^{2} + {(1.72 - 1.557)}^{2} + {(1.28 - 1.557)}^{2} + {(1.55 - 1.557)}^{2}}{15 - 1}$

Paso 8.1.20

Eleva $0.433$ a la potencia de $2$ .

$s = \frac{0.094249 + 0.071289 + 0.131769 + 0.016129 + 0.051529 + 0.005929 + 0.003969 + 0.080089 + 0.097969 + 0.187489 + {(1.51 - 1.557)}^{2} + {(1.271 - 1.557)}^{2} + {(1.72 - 1.557)}^{2} + {(1.28 - 1.557)}^{2} + {(1.55 - 1.557)}^{2}}{15 - 1}$

Paso 8.1.21

Resta $1.557$ de $1.51$ .

$s = \frac{0.094249 + 0.071289 + 0.131769 + 0.016129 + 0.051529 + 0.005929 + 0.003969 + 0.080089 + 0.097969 + 0.187489 + {(- 0.047)}^{2} + {(1.271 - 1.557)}^{2} + {(1.72 - 1.557)}^{2} + {(1.28 - 1.557)}^{2} + {(1.55 - 1.557)}^{2}}{15 - 1}$

Paso 8.1.22

Eleva $- 0.047$ a la potencia de $2$ .

$s = \frac{0.094249 + 0.071289 + 0.131769 + 0.016129 + 0.051529 + 0.005929 + 0.003969 + 0.080089 + 0.097969 + 0.187489 + 0.002209 + {(1.271 - 1.557)}^{2} + {(1.72 - 1.557)}^{2} + {(1.28 - 1.557)}^{2} + {(1.55 - 1.557)}^{2}}{15 - 1}$

Paso 8.1.23

Resta $1.557$ de $1.271$ .

$s = \frac{0.094249 + 0.071289 + 0.131769 + 0.016129 + 0.051529 + 0.005929 + 0.003969 + 0.080089 + 0.097969 + 0.187489 + 0.002209 + {(- 0.286)}^{2} + {(1.72 - 1.557)}^{2} + {(1.28 - 1.557)}^{2} + {(1.55 - 1.557)}^{2}}{15 - 1}$

Paso 8.1.24

Eleva $- 0.286$ a la potencia de $2$ .

$s = \frac{0.094249 + 0.071289 + 0.131769 + 0.016129 + 0.051529 + 0.005929 + 0.003969 + 0.080089 + 0.097969 + 0.187489 + 0.002209 + 0.081796 + {(1.72 - 1.557)}^{2} + {(1.28 - 1.557)}^{2} + {(1.55 - 1.557)}^{2}}{15 - 1}$

Paso 8.1.25

Resta $1.557$ de $1.72$ .

$s = \frac{0.094249 + 0.071289 + 0.131769 + 0.016129 + 0.051529 + 0.005929 + 0.003969 + 0.080089 + 0.097969 + 0.187489 + 0.002209 + 0.081796 + {0.163}^{2} + {(1.28 - 1.557)}^{2} + {(1.55 - 1.557)}^{2}}{15 - 1}$

Paso 8.1.26

Eleva $0.163$ a la potencia de $2$ .

$s = \frac{0.094249 + 0.071289 + 0.131769 + 0.016129 + 0.051529 + 0.005929 + 0.003969 + 0.080089 + 0.097969 + 0.187489 + 0.002209 + 0.081796 + 0.026569 + {(1.28 - 1.557)}^{2} + {(1.55 - 1.557)}^{2}}{15 - 1}$

Paso 8.1.27

Resta $1.557$ de $1.28$ .

$s = \frac{0.094249 + 0.071289 + 0.131769 + 0.016129 + 0.051529 + 0.005929 + 0.003969 + 0.080089 + 0.097969 + 0.187489 + 0.002209 + 0.081796 + 0.026569 + {(- 0.277)}^{2} + {(1.55 - 1.557)}^{2}}{15 - 1}$

Paso 8.1.28

Eleva $- 0.277$ a la potencia de $2$ .

$s = \frac{0.094249 + 0.071289 + 0.131769 + 0.016129 + 0.051529 + 0.005929 + 0.003969 + 0.080089 + 0.097969 + 0.187489 + 0.002209 + 0.081796 + 0.026569 + 0.076729 + {(1.55 - 1.557)}^{2}}{15 - 1}$

Paso 8.1.29

Resta $1.557$ de $1.55$ .

$s = \frac{0.094249 + 0.071289 + 0.131769 + 0.016129 + 0.051529 + 0.005929 + 0.003969 + 0.080089 + 0.097969 + 0.187489 + 0.002209 + 0.081796 + 0.026569 + 0.076729 + {(- 0.007)}^{2}}{15 - 1}$

Paso 8.1.30

Eleva $- 0.007$ a la potencia de $2$ .

$s = \frac{0.094249 + 0.071289 + 0.131769 + 0.016129 + 0.051529 + 0.005929 + 0.003969 + 0.080089 + 0.097969 + 0.187489 + 0.002209 + 0.081796 + 0.026569 + 0.076729 + 0.000049}{15 - 1}$

Paso 8.1.31

Suma $0.094249$ y $0.071289$ .

$s = \frac{0.165538 + 0.131769 + 0.016129 + 0.051529 + 0.005929 + 0.003969 + 0.080089 + 0.097969 + 0.187489 + 0.002209 + 0.081796 + 0.026569 + 0.076729 + 0.000049}{15 - 1}$

Paso 8.1.32

Suma $0.165538$ y $0.131769$ .

$s = \frac{0.297307 + 0.016129 + 0.051529 + 0.005929 + 0.003969 + 0.080089 + 0.097969 + 0.187489 + 0.002209 + 0.081796 + 0.026569 + 0.076729 + 0.000049}{15 - 1}$

Paso 8.1.33

Suma $0.297307$ y $0.016129$ .

$s = \frac{0.313436 + 0.051529 + 0.005929 + 0.003969 + 0.080089 + 0.097969 + 0.187489 + 0.002209 + 0.081796 + 0.026569 + 0.076729 + 0.000049}{15 - 1}$

Paso 8.1.34

Suma $0.313436$ y $0.051529$ .

$s = \frac{0.364965 + 0.005929 + 0.003969 + 0.080089 + 0.097969 + 0.187489 + 0.002209 + 0.081796 + 0.026569 + 0.076729 + 0.000049}{15 - 1}$

Paso 8.1.35

Suma $0.364965$ y $0.005929$ .

$s = \frac{0.370894 + 0.003969 + 0.080089 + 0.097969 + 0.187489 + 0.002209 + 0.081796 + 0.026569 + 0.076729 + 0.000049}{15 - 1}$

Paso 8.1.36

Suma $0.370894$ y $0.003969$ .

$s = \frac{0.374863 + 0.080089 + 0.097969 + 0.187489 + 0.002209 + 0.081796 + 0.026569 + 0.076729 + 0.000049}{15 - 1}$

Paso 8.1.37

Suma $0.374863$ y $0.080089$ .

$s = \frac{0.454952 + 0.097969 + 0.187489 + 0.002209 + 0.081796 + 0.026569 + 0.076729 + 0.000049}{15 - 1}$

Paso 8.1.38

Suma $0.454952$ y $0.097969$ .

$s = \frac{0.552921 + 0.187489 + 0.002209 + 0.081796 + 0.026569 + 0.076729 + 0.000049}{15 - 1}$

Paso 8.1.39

Suma $0.552921$ y $0.187489$ .

$s = \frac{0.74041 + 0.002209 + 0.081796 + 0.026569 + 0.076729 + 0.000049}{15 - 1}$

Paso 8.1.40

Suma $0.74041$ y $0.002209$ .

$s = \frac{0.742619 + 0.081796 + 0.026569 + 0.076729 + 0.000049}{15 - 1}$

Paso 8.1.41

Suma $0.742619$ y $0.081796$ .

$s = \frac{0.824415 + 0.026569 + 0.076729 + 0.000049}{15 - 1}$

Paso 8.1.42

Suma $0.824415$ y $0.026569$ .

$s = \frac{0.850984 + 0.076729 + 0.000049}{15 - 1}$

Paso 8.1.43

Suma $0.850984$ y $0.076729$ .

$s = \frac{0.927713 + 0.000049}{15 - 1}$

Paso 8.1.44

Suma $0.927713$ y $0.000049$ .

$s = \frac{0.927762}{15 - 1}$

Paso 8.2

Simplifica la expresión.

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Paso 8.2.1

Resta $1$ de $15$ .

$s = \frac{0.927762}{14}$

Paso 8.2.2

Divide $0.927762$ por $14$ .

$s = 0.06626871$

Paso 9

Aproxima el resultado.

$s^{2} \approx 0.0663$