6. Yabs Company Limited wishes to carry out a survey of its employees to monitor their views on the future of the company. A departmental breakdown of the company's 200 employees is as
follows
Shop
80
10
Service engineers
20
Quality contro
Marketing and sales
10
Accounts
10
Personnel
20
Administration
10
Catering
A survey of 40 employees is to be conducted. A sampling frame is available, listing the employees
by sumame in alphabetical order, independent of deparment
(a) Explain how the following sampling methods could be came out to obtain the sample of
40 employees
Stratified sampling
quota sampling
simple random sampling
systematic sampling
(b) Discuss the benefits and drawbacks of using quota sampling to obtain the sample of 40
employees.​