Intr-o grupa, 3 elevi au masurat lungimea unui creion si au obtinut urmatoarele valori: 16,2

cm; 16,5 cm si respective 16,1 cm. Aflati valoarea medie a valorilor masurate si erorile obtinute

de fiecare elev.

In a group, 3 students measured the length of a pencil and obtained the following values: 16.2

cm, 16.5 cm and 16.1 cm, respectively. Find the average value of the measured values and the errors obtained by each student.

Average value can be calculated by finding the mean of the values

Average value = Σx / N

A•V = (16.2 + 16.5 + 16.1) / 3

A. V = 48.8 / 3

A. V = 16.27cm

x~ = 16.27 cm

Each student error

If we assume the true value is average value, then, each student error can be calculated using

e = |x~ - x|

e = 16.27 - 16.2

e = 0.07 cm

Also,

e = 16.27 - 16.5

e = - 0.23 cm

e = 0.23 cm, due to absolute value

Also,

e = 16.27 - 16.1

e = 0.17 cm

In Spanish

El valor promedio se puede calcular encontrando la media de los valores

Valor promedio = Σx / N

A • V = (16,2 + 16,5 + 16,1) / 3

A. V = 48.8 / 3

A. V = 16.27cm

x ~ = 16,27 cm

Cada error del alumno

Si asumimos que el valor verdadero es el valor promedio, entonces, cada error del estudiante puede calcularse usando

e = | x ~ - x |

e = 16,27 - 16,2

e = 0.07 cm

También,

e = 16.27 - 16.5

e = - 0,23 cm

e = 0.23 cm, debido al valor absoluto

También,

e = 16.27 - 16.1

e = 0,17 cm