A large company wants to find out what team-building activity its employees prefer. Which of the following samples can give the most valid generalization?

a group with one member from each department

400 randomly chosen employees from the list of all employees

all 624 female employees in the company

all employees who have worked in the company for 5 years or more

2 answers

Option 2: 400 randomly chosen employees from the list of all employees. This sample is large enough to be representative of the whole population and random selection helps to prevent bias.
A large company wants to find out what team-building activity its employees prefer. Which of the following samples can give the most valid generalization?

a group with one member from each department

400 randomly chosen employees from the list of all employees

all 624 female employees in the company

all employees who have worked in the company for 5 years or more