Question

Find the range for the following data:

Classes	115 – 125	125 – 135	135 – 145	145 – 155	155 – 165	165 – 175
Frequency	1	4	6	1	3	5

Answer 1

Here, upper limit of the highest class (L) = 175,
lower limit of the lowest class (S) = 115
∴ Range = L – S
= 175 – 115
= 60