0 Answer
Gallup poll voluntery or response sample
1752 Views
Maggy Mwangi
A PHP Error was encountered
Severity: Notice
Message: Undefined index: userid
Filename: views/question.php
Line Number: 212
Backtrace:
File: /home/mycocrkc/statisticsanswered.com/application/views/question.php
Line: 212
Function: _error_handler
File: /home/mycocrkc/statisticsanswered.com/application/controllers/Questions.php
Line: 416
Function: view
File: /home/mycocrkc/statisticsanswered.com/index.php
Line: 315
Function: require_once
Gallup Poll In a recent Gallup poll, pollsters randomly selected adults and asked them whether they smoke. Because the subjects agreed to respond, is the sample a voluntary response sample?