Answers to the EVERYDATA quiz
1. On a Mercator map, Greenland is typically shown 14 times larger than it really is. A Mercator map distorts objects based on their distance from the equator, and is an example of how data can be misrepresented.
2. An article claiming that people who eat more grilled cheese sandwiches have more sex is an example of correlation. A correlation is simply a relationship in the data. It does not imply that one factor caused another.
3. If you live in Texas and voted for Obama, your vote didn't count because the Electoral College system is based on aggregated data. This is why the U.S. has red states and blue states - even though many areas are actually more like shades of purple.
4. A sample is used to make inferences about the full population. A sample is some - but not all - of the population you're studying, and may be useful when you don't have access to data regarding the full population.