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t_test_two_sample.test.js
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t_test_two_sample.test.js
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/* eslint no-shadow: 0 */
const test = require("tap").test;
const ss = require("../dist/simple-statistics.js");
test("tTestTwoSample", function (t) {
t.test("can test independency of two samples", function (t) {
const res = ss.tTestTwoSample([1, 2, 3, 4], [3, 4, 5, 6], 0);
t.equal(res, -2.1908902300206643);
t.end();
});
t.test("can test independency of two samples (mu == -2)", function (t) {
const res = ss.tTestTwoSample([1, 2, 3, 4], [3, 4, 5, 6], -2);
t.equal(res, 0);
t.end();
});
t.test(
"can test independency of two samples of different lengths",
function (t) {
const res = ss.tTestTwoSample([1, 2, 3, 4], [3, 4, 5, 6, 1, 2, 0]);
t.equal(res, -0.4165977904505309);
t.end();
}
);
t.test("has an edge case for one sample being of size zero", function (t) {
t.equal(ss.tTestTwoSample([1, 2, 3, 4], []), null);
t.equal(ss.tTestTwoSample([], [1, 2, 3, 4]), null);
t.equal(ss.tTestTwoSample([], []), null);
t.end();
});
t.end();
});