I found this article when searching for a current event for German class. The top ten healthiest cities in the world have been determined by residents of cities around the world responding to a CNN survey. The survey asked them how their cities inspire good health and prioritize wellness. A survey asks questions to collect data from a sample to gather information about a population.

http://www.cnn.com/interactive/2014/09/health/cnn10-healthiest-cities/?hpt=he_r1

http://www.stumbleupon.com/su/2JVXx0/12GrHQrR@:qVW5HI@u/brainz.org/10-psychological-experiments-went-horribly-wrong

This article showed 10 experiments dealing with psychology that were cruel, strange, and got out of control. These included various famous experiments, such as the case of Tusko, the elephant that was injected with 3,000 times the normal human dose of LSD. The elephant died almost immediately, instead of showing the effects of aggressiveness from the drug. These were all extreme experiments. Experiments, unlike observational studies, deliberately imposes treatment on individuals to observe their responses.

The weather forecast for 1/7/15 gave a 50%

chance of precipitation. This is an example of

probability, since it states that the chance of having

precipitation today is only 50% likely. Probability is

the likelihood that something will happen.

I came across this when I was researching for a paper about the effects of class size on education. This study was done for information on the relationship between class size and teaching interactions. The study was longitudinal, lasting for three years and involving a large sample of over 10,000 children. A sample is a part of the population that is examined in order to get information. In this case, the population would be students.

http://elibrary.bigchalk.com/elibweb/curriculum/do/document?set=search&dictionaryClick=&secondaryNav=advance&groupid=1&requestid=lib_standard&resultid=1&edition=&ts=A1AF2AD8A306CF13A9C320D3241ADC65_1420655439474&start=1&publicationId=&urn=urn%3Abigchalk%3AUS%3BBCLib%3Bdocument%3B86199067

In this episode, Squidward gets tired of Spongebob laughing, so he tricks Spongebob into thinking he has a disease where if he laughs one more time in the next 24 hours, his laugh box will explode and he will never laugh again. Despite his best efforts, Spongebob accidentally laughs and the next day believes he has lost his inability to laugh. The condition was obviously fake, but Spongebob's belief that it will actually happen caused him to lose his ability to laugh. This is an example of the placebo effect, where a "dummy" treatment is given to a subject and the subject's response is due only to the belief in the treatment's effectiveness.

This interesting page I found in Stumbleupon gave a list of the most common first names and last names. You can also search you first or last name and the website tells you how common your name is ranked and the percentage of people who share your name in the U.S. This is an example of available data because it is from data produced in the past but can be used to answer a present question.