chisq.exp {RVAideMemoire} | R Documentation |
Expected counts for comparison of proportions to given values
Description
Returns expected counts before comparing proportions to given values by a chi-squared test.
Usage
chisq.exp(data, p, graph = FALSE)
Arguments
data |
contingency table. |
p |
theoretical proportions. |
graph |
logical. If |
Details
The function returns how many counts can be < 5 to respect Cochran's rule (80% of counts must be >= 5).
Value
p.theo |
theoretical proportions. |
mat |
contingency table of expected counts. |
cochran |
number of counts which can be < 5. |
Author(s)
Maxime HERVE <maxime.herve@univ-rennes1.fr>
See Also
prop.test
, chisq.test
, mosaicplot
Examples
proportions <- sample(c(0,1),200,replace=TRUE)
populations <- sample(LETTERS[1:3],200,replace=TRUE)
tab.cont <- table(populations,proportions)
p.theo <- c(0.4,0.5,0.7)
chisq.exp(tab.cont,p=p.theo)
[Package RVAideMemoire version 0.9-83-7 Index]