Question

in an experiment refractive index of glass was observed to be 2.48m,2.46m,2.49,2.50m and 2.48m Find the average length ,the absolute error in each observation and percentage error

Answer 1

First of all find mean value of them by adding all the numbers and divide by total number. Ex :- 2.48+2.46+2.49+2.50+2.48/5 = 2.48
After finding mean value you have to find the absolute error :-2.48 - 2.48 = 02.48 - 2.46 = 0.02 and so on.
After this you have to find mean absolute error
You can find this by adding the value of all absolute error divide by total total number i.e 0 + 0.02 +...../n = A
After this you have to find relative error :- A/2.48 = B
Percentage error :- B * 100

Hope it helps you to solve your question.