Why is it now a challenge to use phone numbers for drawing a simple random sample?

Question

Quizplus · Accepted Answer

All options A, B, and C are correct.

A: With the increasing trend of going mobile-only, researchers may miss out on an entire segment of the population who do not have landlines.

B: Some individuals may have both cellphones and landlines, meaning they could potentially be called twice and skew the sample.

C: Phone numbers can now be easily ported, meaning individuals may have phone numbers from different area codes or locations, making it difficult to accurately determine the sampling frame.

Why Is It Now a Challenge to Use Phone Numbers