• 0

A PHP Error was encountered

Severity: Notice

Message: Undefined index: userid

Filename: views/question.php

Line Number: 212


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

name Punditsdkoslkdosdkoskdo

Happiness survey is observational or experimental study?

 Happiness Survey: In a study sponsored by Coca-Cola in 2019, 12,500 people were asked what contributes most to their happiness, and 77% of the respondents said that it was their family or partner. Please explain whether the study is experimental of observational.