Question

Q.3. The frequency table of the monthly salaries of 20 people is shown below.
Salary(Rs.)
3500 4000 4200
4200 4300
Frequency
5
8
5
2
a
Calculate the mean of the salaries of the 20 people.
Calculate the standard deviation of the salaries of the 20 people.
b)​

Answer 1

Answer:

sorry I don't have learnt frequency lesson

Explanation:

really sorry