A contingency table is a crosstable with rows, columns and data related to each of the row/column combination. You may draw such a table on a piece of paper, you may use an as the source of data etc.

The total number of cells that vary freely then is $ (k-1) (k-1)=1$ again. If you think of one single variable with 4 levels, that wouldn't fit in a contingency table: it's just one factor, and in that case it is correct …

Oct 5, 2022 · I thought that the chi squared (χ²) test is to be used when one has an r × c contingency matrix, i.e., when the dependent variables are nonnegative, span the same r dimension, and typically …

Jan 17, 2025 · I have a frequency table 2x5, with 2 columns named men and women, and 5 rows named pathology A, B, C, D and E. I am trying to determine if the proportion of gender is statistically …

Apr 4, 2023 · In a 2 × 2 2 × 2 contingency table the test statistic ∑4 i=1 (Oi−Ei)2 Ei ∑ i = 1 4 (O E) 2 E has approximately a chi-square distribution with one degree of freedom. Here is a derivation, using …

Apr 23, 2015 · Which is best plot, from statistical standpoint, to show a contingency table, which is typically being analyzed by chi-square test? Is it a dodged barplot, stacked barplot, heatmap, contour …

Aug 7, 2024 · This question is about good old 2 × 2 2 × 2 contingency tables. One very common test for comparing the proportions in such a table is Pearson's χ2 χ 2 test (e.g. here or here). Now, for a 2 × …

If you're looking for other ways to compute Fisher's exact test with larger contingency tables, here is a online calculator for Fisher's exact test for 2x3 contingency tables. Also, here's one for 3x3 …

Jan 3, 2019 · Why on a 2 x 2 table such as where p = a a+b p = a a + b the standard error of p p is

The Fisher exact test on the contingency table determines e.g. if the distribution of Forms differ between the Groups. The way you wrote the question, I wonder if you want to know if the frequency is …