size.ci.prop: Sample size for a proportion confidence interval
In statpsych: Statistical Methods for Psychologists
size.ci.prop R Documentation
Sample size for a proportion confidence interval
Description
Computes the sample size required to estimate a population proportion
with desired confidence interval precision. Set the proportion planning
value to .5 for a conservatively large sample size.
Usage
size.ci.prop(alpha, p, w)
Arguments
alpha
alpha level for 1-alpha confidence
p
planning value of proportion
w
desired confidence interval width
Value
Returns the required sample size
Examples
size.ci.prop(.05, .4, .2)
# Should return:
# Sample size
# 93
statpsych documentation built on Sept. 11, 2024, 7:42 p.m.
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| size.ci.prop | R Documentation |
Sample size for a proportion confidence interval
Description
Computes the sample size required to estimate a population proportion with desired confidence interval precision. Set the proportion planning value to .5 for a conservatively large sample size.
Usage
size.ci.prop(alpha, p, w)
Arguments
alpha |
alpha level for 1-alpha confidence |
p |
planning value of proportion |
w |
desired confidence interval width |
Value
Returns the required sample size
Examples
size.ci.prop(.05, .4, .2)
# Should return:
# Sample size
# 93
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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