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
## Selected biography
## Featured and good articlesThese are featured or good articles on statistics topics. - Featured articles
- Featured lists
- Good articles
## Related projects and portalsThe - Related projects
- Related portals
## Selected picture
Simpson's paradox for continuous data: a positive trend appears for two separate groups (blue and red), a negative trend (black, dashed) appears when the data are combined. ## Did you know?- ... 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?
- ... that Ulpian's life table predicted a life expectancy of 19 to 23 years for citizens of the Roman Empire?
- ... that there are many ways to create misleading graphs?
- ... that while the center of gravity for a set of points is located at the spot from which the
*sum of the squares of distances*to all the points is minimized, the geometric median is the spot from which the*sum of distances*is minimized?
## Topics in Statistics
## Statistics categoriesClick an arrow symbol to expand any of the sub-categories: ## Wikimedia |

This article uses material from the Wikipedia page available here. It is released under the Creative Commons Attribution-Share-Alike License 3.0.

What We've Done

Led Digital Marketing Efforts of Top 500 e-Retailers.

Worked with Top Brands at Leading Agencies.

Successfully Managed Over $50 million in Digital Ad Spend.

Developed Strategies and Processes that Enabled Brands to Grow During an Economic Downturn.

Taught Advanced Internet Marketing Strategies at the graduate level.

Manage research, learning and skills at defaultLogic. Create an account using LinkedIn or facebook to manage and organize your Digital Marketing and Technology knowledge. defaultLogic works like a shopping cart for information -- helping you to save, discuss and share.