Question

The following table gives the life times of 400 neon lamps:

Life time (in hours) 300-400 400-500 500-600 600-700 700-800

Number of Lamps 14 56 60 86 74

(i) Represent the given information with the help of a histogram.

(ii) How many lamps have a lifetime of less than 600 hours?​

Answer 1

(ii) How many lamps have a lifetime of less than 600 hours?

14 + 56 + 60 = 130