Given sample data:x -1 0 1 4f 1 1 3 1The range is ;The sample variance is ;The sample standard deviation is .Round to two decimals.
Question
Given sample data:x -1 0 1 4f 1 1 3 1The range is ;The sample variance is ;The sample standard deviation is .Round to two decimals.
Solution
Primero, calculemos el rango de los datos proporcionados.
Los valores de son: -1, 0, 1, 4
El rango se calcula como la diferencia entre el valor máximo y el valor mínimo de :
Por lo tanto, el rango es 5.
Ahora, calculemos la varianza muestral ().
Primero, necesitamos encontrar la media () de los valores de :
Luego, usamos la fórmula de la varianza muestral:
Calculamos cada término:
Sumamos estos valores:
Finalmente, calculamos la varianza muestral:
Por lo tanto, la varianza muestral es 1.
Ahora, calculemos la desviación estándar muestral ().
La desviación estándar muestral es la raíz cuadrada de la varianza muestral:
Por lo tanto, la desviación estándar muestral es 1.
Resumiendo: El rango es 5; La varianza muestral es 1; La desviación estándar muestral es 1.
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