MathPHP\Statistics\DescriptiveTest::testSDNullWhenEmptyArray PHP Method

DescriptiveTest Class Documentation Mostra file Open project: markrogoyski/math-php

testSDNullWhenEmptyArray() public method

public testSDNullWhenEmptyArray ( ) 
    public function testSDNullWhenEmptyArray()
    {
        $this->assertNull(Descriptive::sd(array()));
    }
DescriptiveTest
dataProviderForCoefficientOfVariation
dataProviderForFiveNumberSummary
dataProviderForIQR
dataProviderForMeanAbsoluteDeviation
dataProviderForMedianAbsoluteDeviation
dataProviderForMidhinge
dataProviderForMidrange
dataProviderForPercentile
dataProviderForPopulationVariance
dataProviderForQuartiles
dataProviderForQuartilesExclusive
dataProviderForQuartilesInclusive
dataProviderForRange
dataProviderForSampleVariance
dataProviderForStandardDeviationUsingPopulationVariance
dataProviderForStandardDeviationUsingSampleVariance
testDescribePopulation
testDescribeSample
testFiveNumberSummary
testIQR
testInterquartileRange
testMeanAbsoluteDeviation
testMeanAbsoluteDeviationNullWhenEmptyArray
testMedianAbsoluteDeviation
testMedianAbsoluteDeviationNullWhenEmptyArray
testMidhinge
testMidrange
testMidrangeNullWhenEmptyArray
testPercentile
testPercentileOutOfLowerBoundsP
testPercentileOutOfUpperBoundsP
testPopulationVariance
testPopulationVarianceNullWhenEmptyArray
testQuartiles
testQuartilesExclusive
testQuartilesExclusiveEmptyWhenEmptyArray
testQuartilesInclusive
testQuartilesInclusiveEmptyWhenEmptyArray
testRange
testRangeNullWhenEmptyArray
testSDNullWhenEmptyArray
testSDeviationUsingPopulationVariance
testSDeviationUsingSampleVariance
testSampleVariance
testSampleVarianceNullWhenEmptyArray
testSampleVarianceZeroWhenListContainsOnlyOneItem
testStandardDeviationNullWhenEmptyArray
testStandardDeviationUsingPopulationVariance
testStandardDeviationUsingSampleVariance
testVarianceExceptionDFLessThanZero
testsCoefficientOfVariation