# Portal:Statistics

## Welcome to the statistics portal
Statistical methods are used to summarize and describe a collection of data; this is called Statistics arose no later than the 18th century from the need of states to collect data on their people and economies, in order to administer them. The meaning broadened in the early 19th century to include the collection and analysis of data in general. ## Selected article
The A well-known statement of the problem was published in Because there is no way for the player to know which of the two remaining unopened doors is the winning door, most people assume that each of these doors has an equal probability and conclude that switching does not matter. In fact, the player should switch - doing so doubles the probability of winning the car from 1/3 to 2/3. When the problem and the solution appeared in
## Selected biography
t-test and Student's t-distribution. He joined the Dublin brewery of Arthur Guinness & Son in 1899, where he applied his statistical knowledge both in the brewery and on the farm to the selection of the best yielding varieties of barley. Gosset's key 1908 papers addressed the brewer's concern with small samples. To prevent further disclosure of confidential information, Guinness prohibited its employees from publishing any papers regardless of the contained information, so Gosset used the pseudonym Student for his publications to avoid their detection by his employer.
## Featured and good articlesThese are featured or good articles on statistics topics. - Featured articles
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## Selected picture
## Did you know?- ... that Henry Mann's 1949 book,
*Analysis and design of experiments*, filled mathematical gaps in the statistical writings of Ronald A. Fisher? - ... that Gustav Elfving invented the optimal design of experiments, and so minimized the cost of a cartographic survey, while trapped in his tent in storm-ridden Greenland?
- ... that in 2009, Revolution Analytics named Norman H. Nie, one of the original SPSS developers, as their new CEO?
- ... that proper design of a sampling frame can be crucial in statistical research?
- ... that least-squares spectral analysis is a method for estimating a frequency spectrum, based on a least squares fit between data and trigonometric functions?
- ... that the Holtsmark distribution was proposed in 1919 as a model for the gravitational field of stars?
- ... that variables and attributes are some of the most basic concepts in science?
- ... that although randomness had long been viewed as an obstacle, it is now used as a tool for designing better algorithms?
- ... that the Jadad scale is the world's most widely used means of assessing the methodological quality of clinical trials?
## Topics in Statistics
## Statistics categoriesClick an arrow symbol to expand any of the sub-categories: ## Wikimedia |