Question

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?(1 point)
Responses

all 624 female employees in the company
all 624 female employees in the company

400 randomly chosen employees from the list of all employees
400 randomly chosen employees from the list of all employees

a group with one member from each department
a group with one member from each department

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

Answer 1

400 randomly chosen employees from the list of all employees.

Reason: a simple random sample from the full employee list is the least biased and gives the most representative cross-section of the company. The other choices are biased by gender, tenure, or use only one person per department (which may not be proportional or large enough).