Statistical Analysis Stack Exchange
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Questions tagged [contingency-tables]

Tables of counts (occasionally proportions of marginal counts), arranged by (at least) two marginal categories, displaying bivariate or multivariate frequencies. Sometimes called crosstabs.

Contingency tables are tables of counts (occasionally proportions of marginal counts), arranged by two or more marginal categories, displaying bivariate or multivariate frequencies.

Contingency tables are often associated with chi-square tests.

Contingency tables can be used in exploratory analysis or as a summary. When supplemented by additional information in each category combination besides the count or proportion (such as contribution to chi-square or Pearson residual, for example), these can become a valuable data analysis/diagnostic tool.

Contingency tables are sometimes called crosstabs.

Reference: Wikipedia - Contingency table

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How should you handle cell values equal to zero in a contingency table?

How should you deal with a cell value in a contingency table that is equal to zero in statistical calculations? (Note that such a value can be structural, i.e., it must be zero by definition, or random, i.e., it could have been some other value,…
DrWho
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How to analyze $ 2\times n$ contingency table?

I have a $2\times n$ contingency table. I want to assess whether the rows are independent from the columns or not. If not, I want to know which columns are not independent and which are. What tests are available to analyze these kind of…
a06e
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How do you determine if a particular cell of an i x j contingency table is statistically significant among all other cells?

I have a contingency table which is not fixed, it varies depending on on the data. I want to know how significant a particular cell is compared with the other cells. Is there a method of doing this?
dixi
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Understanding published data: z-ratio for proportions

I am trying to understand a published analysis. This is the data of interest: D1>0 D1<0 D2>0 7 2 9 D2<0 9 15 24 total 16 17 33 The author notes that 17/33 is 51.5% and states: "we expect about 50% of the…
Frank Zafka
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enumerating patterns in a set of contingency tables

I have a set of 3X3 contingency tables and want to identify the distribution of the patterns by comparing their expected and observed number of samples in each cell using a right statistical test. For example, for a given table such as the…
Josh
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Different sub-population sizes in grading data

I am relatively new to statistical analysis. Let's say I have a data set of 5000 report card grades 3000 (60%) are "A" grades 100 (2%) are "D" grades and 25 (0.5%) are "F" grades and let's also say that there are demographic data for who received…
user369340
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Unconditional Contigency tables

Biology student here with a not so strong grasp of stats. I have the following question: Is the number of genes meeting some criteria in Wild type (given the number of genes not meeting criteria in Wild type) significant when compared to the same in…
Anurag N. Sharma
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Deciding rows and columns in a two-way table with the key dependent var and another

In a two-way table of percentages that analyzes what will be in later models the key dependent and key independent variable, which variable is placed on the left to define rows and which variable is placed across the top to define columns?
user163367
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