Question

Seven students measured the diameter of a ball bearing and obtained the following values. 9.50mm, 9.30mm, 9.80mm,9.20mm, 9.40mm, 9.60mm and 9.70mm.
1. Which of the following above values has the largest possible error?
2. Calculate the best value of the diameter of the ball bearing.
3. Name the possible error that can occur when measuring
4. How many significant figures are that values expressed?
5. Which value is most likely an error?

Answer 1

Explanation:

1. 9.80mm and 9.20mm.

2. mean value= summation of all observed value/total no. of observed value

so best value is 9.5.

3. observational error or experimental error.

4. 2 significant figured.

5. 9.80mm.