Question

1)   How might survey respondents distort the "average income" value?

2)   List the ways in which the sample of Yalemen is biased.

3)   ***In today's world, samples are biased for different reasons. Say we are doing a poll on the current president's approval rating (i.e., whether you "approve" or "disapprove"). All the ways in which our poll might be biased by getting our sample through only ONE of the following means: mail, in person/door-to-door, phone with a real person (live), phone with a robot (robo-call), text message, or Twitter.  

4)   Why is the psychiatrist's report that "practically everyone is neurotic" misguided and inaccurate?

5)   How is the following quote related to the thinking gray mental model?

"That is, even if you can't find a source of demonstrable bias, allow yourself some degree of skepticism about the results as long as there is a possibility of bias somewhere".

6)   What is the test of a random sample? Find and quote the relevant text.

7)   What's so deceitful about an unqualified "average"?

8) What do you need to know if someone tells you the average income of an Amazon.com employee?

Answer 1