Jamal comes across some survey results on the Internet that conclude that people who watch cat videos with hip-hop music or cooler than people who watch cat videos with dubstep music

What are some things he should look out for before deciding to believe the results of this survey?

What will be an ideal response?

A good answer will include the following key points:
• Volunteer bias: people who are willing to volunteer their opinions may differ from those who decline to take part.
• Which questions were (and were not) asked and how the questions were phrased? These aspects of a survey's design may reflect assumptions about the topic or encourage certain responses.
• What are the credentials of those designing the test or survey? Are they likely to use a well-designed survey or just make something up?