Question

Determine whether the sampling method appears to be sound or is flawed:

In a survey of 109 subjects, each was asked to indicate how many text messages they send and receive each day. The sample consisted of those who chose to respond to the request posted on the StatCrunch Web site.

A. Sound sampling method
B. Flawed sampling method
C. Depends on the age group surveyed
D. Cannot determine without response rate information

Answer 1

The sampling method in this survey is flawed because it relies on self-selection bias.

Step-by-step explanation:

The sampling method in this survey appears to be flawed.

The survey was conducted by posting a request on the StatCrunch Web site and only those who chose to respond were included in the sample. This self-selection bias can lead to an inaccurate representation of the population since people who are more interested or have strong opinions about the topic of the survey may be more likely to respond.

To ensure a sound sampling method, a random sampling technique could have been used to select a representative sample from the population. This would have minimized bias and provided more accurate results.