Have you seen or read about an example where data were presented on an issue, but the sample was not representative of the population from which it was drawn? If you can’t recall a specific example, locate one using an Internet search.
For this discussion, summarize the issue and respond to the following questions.

Why do you believe the sample was not representative of the population?
What are the undesirable consequences of using a poor sampling technique?
How could the inaccurate reporting of the data been prevented?

I’m suggesting two very brief articles that could be the object of you Discussion. One article is about results of an online poll.  The other is a critique of online polling.  Other choices are welcome.
How accurate are online polls? 
Poll reveals who is most vaccine -hesitant in America and why