What type of sampling is usually the easiest to do?

The new forms of media

A. have brought Americans closer to each other politically. B. such as talk radio have been dominated by liberals. C. like blogs have often changed people from liberals to conservatives. D. like blogs, talk radio, and cable news channels have increased political polarization. E. All of these choices are true.

The fact that many people were surprised when Barack Obama came to office and pursued health care reform, strengthened financial market regulations, and ended America's involvement in Iraq can be seen as a result of what?

a. media coverage of the election as a horse race b. stringers who go after sound bites c. social media discussion of the election d. microtargeting strategy by advertisers e. media bias reflected in election coverage

A median would give us a better indication of central tendency in which of the following cases?

A) When there are a couple of extremely low scores B) When there are a couple of extremely high scores C) When the researcher is asking a question about people's preferences for either Madonna or Garth Brooks D) Either A or B

An effect size is a measure of

a. the magnitude of the relationship between two variables. b. whether the result reached statistical significance. c. the validity of our result. d. the probability that we made a correct decision.