Question

An electric company conducted research on customer satisfaction. Match the description of the research with the sampling method used.

They gathered a number of responses that was proportionate to the number of customers within seven different zip codes.

They gathered responses from customers that called in for assistance.

They gathered responses from 20 customers in every zip code.

The phone system flagged customers at random to complete a phone survey.

A. systematic sampling
B. Stratified Sampling
C. Simple random sampling
D. Convenience Sampling

Answer 1

Stratified Sampling: They gathered a number of responses that was proportionate to the number of customers within seven different zip codes.

Convenience Sampling: They gathered responses from customers that called in for assistance.

systematic sampling: They gathered responses from 20 customers in every zip code.

Simple random sampling: The phone system flagged customers at random to complete a phone survey.

Answer 2

Thank you soooooooooo much! I really appreciate your help :D