Answer to Question #241566 in Physics for paul warren ilagan

Question

The standard mass of an unknown substance is 15.6g. Which of the following set has the least accurate value? Show solutions

Trial A B C

1 15.6 15.8 15.6

2 15.4 14.6 15.5

3 15.6 14.7 15.8

Answer 1

Find the mean of all these sets:

1) The mean is

$$\mu=\frac{m_1+m_2+m_2}{3}=\frac{15.6+15.8+15.6}{3}=15.67\text{ g}.$$

2) The mean is

$$\mu=\frac{m_1+m_2+m_2}{3}=\frac{15.4+14.6+15.5}{3}=15.17\text{ g}.$$

3) The mean is

$$\mu=\frac{m_1+m_2+m_2}{3}=\frac{15.6+14.7+15.8}{3}=15.37\text{ g}.$$

The least accurate value is 2.