24 lines
967 B
JavaScript
24 lines
967 B
JavaScript
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var test = require('tape');
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var ss = require('../');
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// Data from Poisson goodness-of-fit example 10-19 in William W. Hines & Douglas C. Montgomery,
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// "Probability and Statistics in Engineering and Management Science", Wiley (1980).
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var data_10_19 = [
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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2, 2, 2, 2, 2, 2, 2, 2, 2,
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3, 3, 3, 3
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];
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test('chi_squared_goodness_of_fit', function(t) {
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test('can reject the null hypothesis with level of confidence specified at 0.05', function(t) {
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t.equal(false, ss.chi_squared_goodness_of_fit(data_10_19, ss.poisson_distribution, 0.05));
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t.end();
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});
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test('can accept the null hypothesis with level of confidence specified at 0.10', function(t) {
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t.equal(true, ss.chi_squared_goodness_of_fit(data_10_19, ss.poisson_distribution, 0.10));
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t.end();
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});
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t.end();
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});
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