unity::scopes::testing::StudentsTTest Struct Reference

Implements different variants of the Student's T-test (see http://en.wikipedia.org/wiki/Student's_t-test) More...

#include <unity/scopes/testing/Statistics.h>

Classes
struct	Result
	Executing the test returns a set of hypothesis that have to be evaluated at the desired confidence level. More...

Public Member Functions
Result	one_sample (const Sample &sample, Sample::ValueType mean, Sample::ValueType std_dev)
	one_sample calculates the Student's T test for one sample and a known mean and std. dev.. More...
Result	two_independent_samples (const Sample &sample1, const Sample &sample2)
	two_independent_samples calculates the Student's T test for two samples More...

Detailed Description

Implements different variants of the Student's T-test (see http://en.wikipedia.org/wiki/Student's_t-test)

unity::scopes::testing::OutOfProcessBenchmark benchmark;

 unity::scopes::testing::Result search_result;
 unity::scopes::ActionMetadata meta_data{default_locale, default_form_factor};

 static const std::size_t sample_size{10};
 static const std::chrono::seconds per_trial_timeout{1};

 unity::scopes::testing::Benchmark::PreviewConfiguration config
 {
     [search_result, meta_data]() { return std::make_pair(search_result, meta_data); },
     {
         sample_size,
         per_trial_timeout
     }
 };

auto result = benchmark.for_preview(scope, config);

 auto test_result = unity::scopes::testing::StudentsTTest().one_sample(
             reference_preview_performance,
             result);

 EXPECT_EQ(unity::scopes::testing::HypothesisStatus::not_rejected,
           test_result.sample_mean_is_eq_to_reference(0.05));
 EXPECT_EQ(unity::scopes::testing::HypothesisStatus::not_rejected,
           test_result.sample_mean_is_ge_than_reference(0.05));
 EXPECT_EQ(unity::scopes::testing::HypothesisStatus::rejected,
           test_result.sample_mean_is_le_than_reference(0.05));

Member Function Documentation

unity::scopes::testing::StudentsTTest::Result unity::scopes::testing::StudentsTTest::one_sample	(	const Sample &	sample,
		Sample::ValueType	mean,
		Sample::ValueType	std_dev
	)

one_sample calculates the Student's T test for one sample and a known mean and std. dev..

Parameters

sample	Sample of values.
mean	The known mean of the underlying distribution
std_dev	The known std. dev. of the underlying distribution

Returns

unity::scopes::testing::StudentsTTest::Result unity::scopes::testing::StudentsTTest::two_independent_samples	(	const Sample &	sample1,
		const Sample &	sample2
	)

two_independent_samples calculates the Student's T test for two samples

Parameters

sample1	The first sample
sample2	The second sample

Returns

An instance of Result.

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The documentation for this struct was generated from the following files:

• include/unity/scopes/testing/Statistics.h
• src/scopes/testing/Statistics.cpp