Sample size calculation
sample_size( type, err_mean = 2, sd_mean = 10, err_prop = 0.1, p_prop = 0.5, conf_lev = 0.95, incidence = 1, response = 1, pop_correction = "no", pop_size = 1e+06 )
| type | Choose "mean" or "proportion" |
|---|---|
| err_mean | Acceptable Error for Mean |
| sd_mean | Standard deviation for Mean |
| err_prop | Acceptable Error for Proportion |
| p_prop | Initial proportion estimate for Proportion |
| conf_lev | Confidence level |
| incidence | Incidence rate (i.e., fraction of valid respondents) |
| response | Response rate |
| pop_correction | Apply correction for population size ("yes","no") |
| pop_size | Population size |
A list of variables defined in sample_size as an object of class sample_size
See https://radiant-rstats.github.io/docs/design/sample_size.html for an example in Radiant
summary.sample_size to summarize results
sample_size(type = "mean", err_mean = 2, sd_mean = 10)#> $n #> [1] 97 #> #> $zval #> [1] 1.959964 #> #> $type #> [1] "mean" #> #> $err_mean #> [1] 2 #> #> $sd_mean #> [1] 10 #> #> $conf_lev #> [1] 0.95 #> #> $incidence #> [1] 1 #> #> $response #> [1] 1 #> #> $pop_correction #> [1] "no" #> #> attr(,"class") #> [1] "sample_size" "list"