Answer to Question #142816 in Physics for Ridwanul Islam Shafi

Question

Suppose two students measure the length of a piece of wire three times each. Student A obtains results of 8.09,
8.10, and 8.11 centimeters. Student B obtains determines a length of 8.1 centimeters for all of his three
measurements. Although the average length found for each student’s measurements was 8.1 cm, what
qualitative statements can be made concerning the measurements made by students A and B?

Answer 1

It is clear, that the deviation for the first student's measurements is bigger than the deviation for the second student's measurements. That is because by definition, the deviation reflects the rate of the spreading of experimental data around their mean value. Since all values of the student B are exactly equal to the mean value, their deviation is equal to 0.

Answer. The iation for the first student's measurements is bigger than the deviation for the second student's measurements