Look in the Newspaper

In the worksheet from today we saw 4 different ways to argue a claim
  1. Observation study
  2. Survey
  3. Experiment
  4. Anecdote
Find places in the newspaper (any major newspaper is fine) where these techniques are used. Find an example for at least 3 of the above techniques. Xerox the article and explain which technique is being used and whether or not it is a convincing argument.