size.ci.mean: Sample size for a mean confidence interval
In statpsych: Statistical Methods for Psychologists
size.ci.mean R Documentation
Sample size for a mean confidence interval
Description
Computes the sample size required to estimate a population mean with
desired confidence interval precision. Set the variance planning value to
the largest value within a plausible range for a conservatively large
sample size.
Usage
size.ci.mean(alpha, var, w)
Arguments
alpha
alpha level for 1-alpha confidence
var
planning value of response variable variance
w
desired confidence interval width
Value
Returns the required sample size
Examples
size.ci.mean(.05, 264.4, 10)
# Should return:
# Sample size
# 43
statpsych documentation built on Sept. 11, 2024, 7:42 p.m.
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.
| size.ci.mean | R Documentation |
Sample size for a mean confidence interval
Description
Computes the sample size required to estimate a population mean with desired confidence interval precision. Set the variance planning value to the largest value within a plausible range for a conservatively large sample size.
Usage
size.ci.mean(alpha, var, w)
Arguments
alpha |
alpha level for 1-alpha confidence |
var |
planning value of response variable variance |
w |
desired confidence interval width |
Value
Returns the required sample size
Examples
size.ci.mean(.05, 264.4, 10)
# Should return:
# Sample size
# 43
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.
Embedding an R snippet on your website
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.