Question

Find range of the following data.

Classes	62 – 64	64 – 66	66 – 68	68 – 70	70 – 72
Frequency	5	3	4	5	3

Answer 1

Here, upper limit of the highest class (L) = 72,
lower limit of the lowest class (S) = 62
∴ Range = L − S
= 72 – 62
= 10