Statistic_test Class Reference

Description

Test:

verifies the proper working of statistic helper functions.

• calculate mean and standard derivation
• one-dimensional linear regression

See also

DataCSV_test.hpp

statistic.hpp

Definition at line 51 of file statistic-test.cpp.

Private Member Functions
void	run (Arg)
void	demonstrate_DataSpan ()
void	check_baseStatistics ()
void	check_wightedLinearRegression ()
void	check_TimeSeriesLinearRegression ()

Member Function Documentation

run()

void run ( Arg  )

inlineprivate

Definition at line 54 of file statistic-test.cpp.

References Statistic_test::check_baseStatistics(), Statistic_test::check_TimeSeriesLinearRegression(), Statistic_test::check_wightedLinearRegression(), and Statistic_test::demonstrate_DataSpan().

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demonstrate_DataSpan()

void demonstrate_DataSpan ( )

inlineprivate

Test:

a simplified preview on C++20 ranges

Definition at line 66 of file statistic-test.cpp.

References lib::explore(), util::join(), and VERIFY_ERROR.

Referenced by Statistic_test::run().

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check_baseStatistics()

void check_baseStatistics ( )

inlineprivate

Test:

helpers to calculate mean and standard derivation

Definition at line 95 of file statistic-test.cpp.

References lib::stat::average(), lib::stat::averageLastN(), DataSpan< D >::begin(), lib::stat::lastN(), lib::stat::sdev(), and DataSpan< D >::size().

Referenced by Statistic_test::run().

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check_wightedLinearRegression()

void check_wightedLinearRegression ( )

inlineprivate

Test:

attribute a weight to each data point going into linear regression

• using a simple scenario with three points
• a line with gradients would run through the end points (1,1) ⟶ (5,5)
• but we have a middle point, offset by -2 and with double weight
• thus the regression line is overall shifted by -1
• standard derivation is √3 and correlation 81% (both plausible and manually checked

Definition at line 128 of file statistic-test.cpp.

References lib::stat::computeLinearRegression(), util::join(), and lib::stat::sdev().

Referenced by Statistic_test::run().

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check_TimeSeriesLinearRegression()

void check_TimeSeriesLinearRegression ( )

inlineprivate

Test:

regression over a series of measurement data

• use greater mount of data generated with randomness
• actually a power function is hidden in the data

Definition at line 157 of file statistic-test.cpp.

References lib::stat::computeTimeSeriesLinearRegression(), and lib::ranRange().

Referenced by Statistic_test::run().

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Inheritance diagram for Statistic_test:

Collaboration diagram for Statistic_test:

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The documentation for this class was generated from the following file:

• statistic-test.cpp