SAMPLE QUESTIONS
1. From the following data find the number class intervals if class length is given as 5.
73, 72, 65, 41, 54, 80, 50, 46, 49, 53.
a) 6
b) 5
c) 7
d) 8
2. A sample study of the people of an area revealed that total number of women were 40% and the percentage of coffee drinkers were 45 as a whole and the percentage of male coffee drinkers was 20. What was the percentage of female not-coffee drinkers?
a) 10
b) 15
c) 18
d) 20