6 releases
0.2.4 | Oct 10, 2024 |
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0.2.3 | Oct 9, 2024 |
0.1.0 | Oct 3, 2024 |
#70 in Science
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HypoRS: A Statistical Hypothesis Testing Library
hypors
is a Rust library designed for performing a variety of hypothesis tests, including t-tests, z-tests, proportion tests, ANOVA, Chi-square tests, and Mann-Whitney tests. This library leverages the polars
crate for efficient data manipulation and the statrs
crate for statistical distributions.
Rust Crate: https://crates.io/crates/hypors
PyPI Package: Work in Progress
Features
Hypothesis Tests
Hypothesis testing is available for this suite of common distributions.
- T-Tests: One-sample, two-sample paired, and two-sample independent t-tests.
- Z-Tests: One-sample, two-sample paired, and two-sample independent z-tests.
- Proportion Tests: One-sample and two-sample proportion tests.
- ANOVA: One-way ANOVA for comparing means across multiple groups.
- Chi-Square Tests: Chi-square test for independence and goodness-of-fit tests.
- Mann-Whitney U Test: Non-parametric test for comparing two independent samples.
Sample Size Calculation
All parametrized distributions have respective modules to calculate minimum sample size required with customizable parameters for alpha and statistical power.
Additional Features:
- Customizable tail type (left, right, and two-tailed).
- Customizable alpha value for all tests.
- Confidence interval calculations for all tests.
- p-value is generated along with each statistic.
- Null and alternate hypotheses strings are also generated.
Installation
To use this library in your Rust project, add the following to your Cargo.toml
:
[dependencies]
hypors = "0.2.4"
Note HypoRS relies on the following dependencies, which will be automatically included:
serde (version >=1.0.210)
statrs (version >=0.17.1)
polars (version >=0.43.1)
Example Usage
Rust
Here are some examples of running tests with Rust.
T - Test
use polars::prelude::*;
use hypors::{t::t_test, common::TailType};
let data = Series::new("sample", &[1.2, 2.3, 1.9, 2.5, 2.8]);
let population_mean = 2.0;
let tail = TailType::Two;
let alpha = 0.05;
let result = t_test(&data, population_mean, tail, alpha).unwrap();
println!("Test Statistic: {}", result.test_statistic);
println!("p-value: {}", result.p_value);
println!("Confidence Interval: {}", result.confidence_interval);
println!("Null Hypothesis: {}", result.null_hypothesis);
println!("Alternate Hypothesis: {}", result.alt_hypothesis);
println!("Reject Null Hypothesis?: {}", result.reject_null);
Chi Square Test
use polars::prelude::*;
use hypors::{chi_square::independence};
let observed = vec![10, 20, 30]; // Observed frequencies
let expected = vec![15, 15, 30]; // Expected frequencies
let result = independece(&observed, &expected).unwrap();
println!("Chi-Square Statistic: {}", result.test_statistic);
println!("p-value: {}", result.p_value);
println!("Null Hypothesis: {}", result.null_hypothesis);
println!("Alternate Hypothesis: {}", result.alt_hypothesis);
println!("Reject Null Hypothesis?: {}", result.reject_null);
Python
Work in Progress
Future Plans
The next step for hypors
is to add Python bindings to make it accessible to the Python community. This work is currently in progress. Stay tuned for updates!
Contributing
Contributions are always welcome! If you have suggestions for improvements, bug fixes, or new features, please feel free to open an issue or submit a pull request.
License
This project is licensed under the MIT License.
Dependencies
~18–27MB
~440K SLoC