Contingency table | Wikipedia audio article
Channel: wikipedia tts
Date: 2019-10-06

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Contingency_table


00:00:20 1 Example
00:00:40 2 Standard contents of a contingency table
00:01:00 3 Measures of association
00:01:20 3.1 Odds ratio
00:01:50 3.2 Phi coefficient
00:02:10 3.3 Cramér's iV/i and the contingency coefficient iC/i
00:02:40 3.4 Tetrachoric correlation coefficient
00:03:01 3.5 Lambda coefficient
00:03:21 3.6 Uncertainty coefficient
00:03:41 3.7 Others
00:04:01 4 See also



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SUMMARY
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In statistics, a contingency table (also known as a cross tabulation or crosstab) is a type of table in a matrix format that displays the (multivariate) frequency distribution of the variables. They are heavily used in survey research, business intelligence, engineering and scientific research. They provide a basic picture of the interrelation between two variables and can help find interactions between them. The term contingency table was first used by Karl Pearson in "On the Theory of Contingency and Its Relation to Association and Normal Correlation", part of the Drapers' Company Research Memoirs Biometric Series I published in 1904.
A crucial problem of multivariate statistics is finding the (direct-)dependence structure underlying the variables contained in high-dimensional contingency tables. If some of the conditional independences are revealed, then  even the storage of the data can be done in a smarter way (see Lauritzen (2002)). In order to do this one can use information theory concepts, which gain the information only from the distribution of probability, which can be expressed easily from the contingency table by the relative frequencies.
A pivot table is a way to create contingency tables using spreadsheet software.