In an experiment to determine the refractive index of water, a student took five sets of observations and got the values for the refractive index of water as 1.32, 1.37, 1.36, 1.39 and 1.31. What is its average value?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e 1.35.
Average = (1.32 + 1.37 + 1.36 + 1.39 + 1.31)/5 = 1.35