The daily wages of 50 workers in a factory are grouped as follows:
a. Class interval (Rs) : 100–120 120–140 140–160 160–180 180–200
Frequency : 5 9 15 14 7
(a) Class interval (Rs) : 100–120 120–140 140–160 160–180 180–200
Frequency : 5 9 15 14 7
(i) Compute the mean daily wage of the workers.
(b) (ii) Determine the median daily wage.
(c) (iii) Using the two values obtained above, comment on whether the wage distribution is symmetric, positively skewed or negatively skewed. Which of the two measures would you quote to represent a typical worker’s wage? Give a reason.