Question

Construct a histogram and a frequency polygon for the following data:

Class intervals	frequency
5-10	6
10-15	12
15-25	10
25-45	8
45-75	15

Answer 1

Class Interval	Frequency	Width of the class	Adjusted Frequency
5-10	6	5	\(\frac{6}{5} \times 5 = 6\)
10-15	12	5	\(\frac{12}{5} \times 5 = 12\)
15-25	10	10	\(\frac{10}{10} \times 5 = 5\)
25-45	8	20	\(\frac{8}{20} \times 5 =2\)
45-75	15	30	\(\frac{15}{30} \times 5 = 2.5\)