freq1way {s20x} | R Documentation |
If hypothprob is absent: prints confidence intervals for the true proportions, a Chi-square test for uniformity, confidence intervals for differences in proportions (no corrections for multiple comparisons and plots the proportions.
If hypothprob is present: prints confidence intervals for the true proportions, a Chi-square test for the hypothesized probabilities, and plots the sample proportions (with atached confidence limits) alongside the corresponding hypothesized probabilities. )
freq1way(counts, hypothprob, conf.level = 0.95, addCIs = TRUE, digits = 4,arrowwid = 0.1, estimated = 0)
counts |
A 1-way frequency table as produced by table() |
hypothprob |
If present, a set of probabilities to test the cell counts against |
conf.level |
confidence level for the confidence interval, expressed as a decimal. |
addCIs |
If true, adds confidence limits to plot of sample proportions |
digits |
used to control rounding of printout |
arrowwid |
controls width of arrowheads |
estimated |
default is 0. Subtracted from the df for the Chi-square test. |
An invisible list containing the following components:
CIs |
a matrix containing the confidence intervals. |
exp |
a vector of the expected counts. |
chi |
a vector of the components of Chi-square. |
##Body image data: data(body.df) eth.table <- with(body.df, table(ethnicity)) freq1way(eth.table) freq1way(eth.table,hypothprob=c(0.2,0.4,0.3,0.1))