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## Statistics
The word We describe our knowledge (and ignorance) mathematically and attempt to learn more from whatever we can observe. This requires us to - plan our observations to control their variability (experiment design),
- summarize a collection of observations to feature their commonality by suppressing details (descriptive statistics), and
- reach consensus about what the observations tell us about the world we observe (statistical inference).
The probability of an event is often defined as a number between one and zero rather than a percentage. In reality however there is virtually nothing that has a probability of 1 or 0. You could say that the sun will certainly rise in the morning, but what if an extremely unlikely event destroys the sun? What if there is a nuclear war and the sky is covered in ash and smoke? We often round the probability of such things up or down because they are so likely or unlikely to occur, that it's easier to recognise them as a probability of one or zero.
However, this can often lead to misunderstandings and dangerous behaviour, because people are unable to distinguish between, e.g., a probability of 10 Some sciences use applied statistics so extensively that they have specialized terminology. These disciplines include: - Biostatistics
- Business statistics
- Economic statistics
- Engineering statistics
- Population statistics
- Psychological statistics
- Social statistics (for all the
*social*sciences) - Process analysis and Chemometrics (for analysis of data from analytical chemistry and chemical engineering)
Links to observable statistical phenomena are collected at statistical phenomena
## National Statistical Services- Canada: Statistics Canada
- France: National Institute for Statistics and Economic Studies
- Greece: National Statistical Service of Greece
- India: Indian Statistical Institute
- New Zealand: Statistics New Zealand
- USA: American Statistical Association
## See alsoLinear regression--analysis of variance (ANOVA) -- multivariate statistics -- extreme value theory -- list of statisticians -- list of statistical topics -- machine learning ## External links | |||||||

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