Question

The distribution of heights (in cm) of 100 people is given below. Construct a histogram and the frequency polygon imposed on it.

Answer 1

The given distribution is discontinuous.

Converting into continuous distribution we have

Lower boundary = lower limit – 1/2 (gap between the adjacent class interval)

= 125 – 1/2 (1) = 124.5

Upper boundary = Upper limit + 1/2 (gap between adjacent class interval)

= 135 + 1/2 = 135.5

∴ The new frequency table is