contingency table - definizione. Che cos'è contingency table
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Cosa (chi) è contingency table - definizione

CONTINGENCY TABLE
Cross tabulation; Cross tabs; Contingency coefficient; Cross tab; Crosstab; Cross-classification; Cross-tabulation; Cross tabulations; Crosstabs; Crosstabulation; Cross-tab; Bivariate table; Bivariate tables; Contingency tables; Contingency matrix

contingency table         
¦ noun Statistics a table showing the distribution of one variable in rows and another in columns, used to study the correlation between the two.
Contingency table         
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.
CROSSTABS         
Simple language for statistical analysis of tabular data. "User's Manual for the CROSSTABS System", Cambridge Computer Assoc (Feb 1977).

Wikipedia

Contingency table

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.