A PHP Error was encountered
Severity: Warning
Message: Undefined array key "userid"
Filename: views/question.php
Line Number: 212
Backtrace:
File: /home/statpmkj/public_html/application/views/question.php
Line: 212
Function: _error_handler
File: /home/statpmkj/public_html/application/controllers/Questions.php
Line: 416
Function: view
File: /home/statpmkj/public_html/index.php
Line: 315
Function: require_once
Indicate whether the statement below is true or false. If false, explain why.
Indicate whether the statement below is true or false. If false, explain why.
It is better to try to match the characteristics of the sample to the population rather than relying on randomization.