Question 1. A survey was conducted by a group of students as a part of their environment awareness programme, in which they collected the following data regarding the number of plants in 20 houses in a locality. Find the mean number of plants per house. Which method did you use for finding the mean, and why? Solution: Consider the following distribution of daily wages of 50 workers of a factory. 2. Find the mean daily wages of the workers of the factory by using an appropriate method. Solution: Question 3. The following distribution shows the daily pocket allowance of children of a locality. The mean pocket allowance is ₹ 18. Find the missing frequency f. Solution: Question 4. Thirty women were examined in a hospital by a doctor and the number of heart beats per minute were recorded and summarised as follows. Find the mean heart beats per minute for these women, choosing a suitable method Solution: Question 5. In a retail market, fruit vendors were ...