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68-95-99.7 rule - Wikipedia, the free encyclopedia
The 68-95-99.7 rule, or three sigma rule, or empirical rule, states that for a normal distribution, almost all values lie within 3 standard deviations of the mean.
About 68% of the values lie within 1 standard deviation of the mean. In statistical notati
Estimating World GDP
I construct estimates of world GDP over the very long run by combining estimates of total human populations with estimates of levels of real GDP per capita.
Home - Numbrary
Numbrary is a free online service dedicated to finding, using and sharing numbers on the web.
Infochimps.org: Free Redistributable Data Sets of Every Kind
There are many sources to find out something about everything. Until now, there’s been no good place for you to find out everything about something.
How To Analyze Data Using the Average | BetterExplained
The average is a simple term with several meanings. The type of average to use depends on whether you’re adding, multiplying, grouping or dividing work among the items in your set.
Analytics Press: Turning Numbers into Knowledge
- Turning Numbers into Knowledge teaches you (in a non-technical way) the art of using numbers for practical problem solving, revealing tools, tricks, and heretofore unwritten rules that the best real-world problem solvers know by heart. Everyone, from jour - jaydugger on 2006-07-15
[cond-mat/0601668] On the Strength of the Carbon Nanotube-Based Space Elevator Cable: From Nano- to Mega-Mechanics
- In this paper different deterministic and statistical models, based on new quantized theories proposed by the author, are presented to estimate the strength of a real, thus defective, space elevator cable. The cable, of ~100 megameters in length, is compo - jaydugger on 2006-07-15
expialidocio.us
- A bar chart that displays the number of posts you've tagged for each day. A tag cloud that displays the tags for the selected range of dates. - jaydugger on 2006-07-15
Sustainability of Human Progress
- This Web page and its satellites are aimed at showing that human material progress is desirable and sustainable. People have worried about many problems. These pages discuss energy in general, nuclear energy, solar energy, food supply, population, fresh w - jaydugger on 2006-07-15
Reason: Don't Be Terrorized: You're more likely to die of a car accident, drowning, fire, or murder
- I need the chart from this article on a T-shirt, just to annoy the TSA during my next trip through an airport. - jaydugger on 2007-02-05
Odds of Dying - NSC
- Did you know drowning fatalities happen more often than fireworks fatalities? Don't ban bottle rockets--ban swimming pools! - jaydugger on 2007-02-05
Social Explorer--Maps US Census Data
- Social Explorer is based at Queens College of the City University of New York. Our objective is to help visually analyze and understand the demography of the U.S. through the use of interactive maps and data reports. - jaydugger on 2007-02-05
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