Package ci: Confidence Intervals for Education

Package ci is an educational package providing intuitive functions for calculating confidence intervals (CI) for various statistical parameters. Designed primarily for teaching and learning about statistical inference (particularly confidence intervals). Offers user-friendly wrappers around established methods for proportions, means, and bootstrap-based intervals. Integrates seamlessly with Tidyverse workflows, making it ideal for classroom demonstrations and student exercises.

Report bugs, issues, and desired improvements at https://github.com/GegznaV/ci/issues.

Installation

Installation from a CRAN:

install.packages("ci")

Development version

Install from GitHub:

if (!require(remotes)) install.packages("remotes")
remotes::install_github("GegznaV/ci", dependencies = TRUE)

Note! To install from GitHub on Windows, you need the RTools.

Examples

ci::ci_binom(x = 20, n = 101)

Or:

library(ci)
ci_binom(x = 20, n = 101)

library(tidyverse)
library(ci)

data(npk, package = "datasets")
head(npk)

npk |>
  group_by(N, P, K) |>
  ci_mean_t(yield)