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

$(15.6+15.8+15.6)/3=15.7$

$(15.4+14.6+15.5)/3=15.2$

$(15.6+14.7+15.8)/3=15.4$

The least accurate value 15.6