Calculate lower and upper confidence intervals given a mean,
standard deviation, sample size, and confidence level. You may
want to use ci_var() to calculate all values quickly.
Usage
ci_lower(mean, ssd, n, conf = 0.95)
ci_upper(mean, ssd, n, conf = 0.95)
Arguments
- mean
Numeric. Mean: mean(var, na.rm = TRUE)
- ssd
Numeric. Standard deviation: sd(var, na.rm = TRUE)
- n
Integer. Amount of observations: n()
- conf
Numeric (0-1). Confidence level.
Value
Vector with confidence limit value.
Examples
ci_lower(100, 5, 10)
#> [1] 96.42322
ci_upper(100, 5, 10)
#> [1] 103.5768
