Why the Polls were Wrong
Channel: MJ the Fellow Actuary
Date: 2016-11-14

The top 5 reasons are as follows:
1. Biased Sample
2. Shy Voter
3. Extrapolation Abuse
4. Correlation and Causation
5. Normal Distribution Error

For these reasons the media underestimated the odds of Donald Trump winning the election. They though the Democrats had an easy win and it was all surprise when the Republicans won.