An epidemiological survey of a region in Asia has determined that the incidence of stomach and colon cancer is extremely low. The consistent characteristic of the region is that the people drink an enormous amount of green tea

The conclusion is that there is some factor in green tea that will reduce the likelihood of contracting stomach or colon cancer. The speaker argues that the members of the audience should drink more green tea so they also can reduce the chances of this kind of cancer. Evaluate the reasoning involved in this argument. What type of claim is being made, what form of reasoning is involved, and how sound is the argument raised?
What will be an ideal response?

An epidemiological survey is essentially reasoning from example. The investigators seek to find correlations between the habits and conditions of the population and the object of their study. The claim made by the speaker is one of policy since it asks the audience to do something based upon the evidence. The argument is limited because there is no causal relationship established and because a number of other factors could intervene to affect the consequences of drinking green tea. A good answer will apply the questions for evaluating reasoning from examples.