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Additional statistical work (#1088) 

* Merge branch 'master' of C:\Projects\PHPOffice\PHPSpreadsheet\develop with conflicts.

* More statistical tests

* Further statistical tests

* Unit tests for some of the trend functions

* resolve scrutiniser objections

* Fix order of @return types :-(
This commit is contained in:
Mark Baker 2019-07-16 20:35:48 +02:00 committed by GitHub
parent f1e82a212f
commit 6d739f1fe6
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12 changed files with 257 additions and 17 deletions
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26
src/PhpSpreadsheet/Calculation/Statistical.php
View File

@ -596,11 +596,7 @@ class Statistical
}
// Is it a numeric value?
if ((is_numeric($arg)) && (!is_string($arg))) {
if ($returnValue === null) {
$returnValue = $arg;
} else {
$returnValue += $arg;
}
$returnValue += $arg;
++$aCount;
}
}
@ -643,11 +639,7 @@ class Statistical
} elseif (is_string($arg)) {
$arg = 0;
}
if ($returnValue === null) {
$returnValue = $arg;
} else {
$returnValue += $arg;
}
$returnValue += $arg;
++$aCount;
}
}
@ -821,7 +813,7 @@ class Statistical
* @param float $probability Probability of success on each trial
* @param bool $cumulative
*
* @return float
* @return float|string
*
* @todo Cumulative distribution function
*/
@ -863,7 +855,7 @@ class Statistical
* @param float $value Value for the function
* @param float $degrees degrees of freedom
*
* @return float
* @return float|string
*/
public static function CHIDIST($value, $degrees)
{
@ -896,7 +888,7 @@ class Statistical
* @param float $probability Probability for the function
* @param float $degrees degrees of freedom
*
* @return float
* @return float|string
*/
public static function CHIINV($probability, $degrees)
{
@ -955,7 +947,7 @@ class Statistical
* @param float $stdDev Standard Deviation
* @param float $size
*
* @return float
* @return float|string
*/
public static function CONFIDENCE($alpha, $stdDev, $size)
{
@ -985,7 +977,7 @@ class Statistical
* @param mixed $yValues array of mixed Data Series Y
* @param null|mixed $xValues array of mixed Data Series X
*
* @return float
* @return float|string
*/
public static function CORREL($yValues, $xValues = null)
{
@ -1513,7 +1505,7 @@ class Statistical
* @param mixed $yValues array of mixed Data Series Y
* @param mixed $xValues of mixed Data Series X
*
* @return float
* @return bool|float|string
*/
public static function FORECAST($xValue, $yValues, $xValues)
{
@ -1692,7 +1684,7 @@ class Statistical
/**
* GROWTH.
*
* Returns values along a predicted emponential Trend
* Returns values along a predicted exponential Trend
*
* @param mixed[] $yValues Data Series Y
* @param mixed[] $xValues Data Series X

112
tests/PhpSpreadsheetTests/Calculation/StatisticalTest.php
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@ -109,6 +109,86 @@ class StatisticalTest extends TestCase
return require 'data/Calculation/Statistical/BETAINV.php';
}
/**
* @dataProvider providerBINOMDIST
*
* @param mixed $expectedResult
*/
public function testBINOMDIST($expectedResult, ...$args)
{
$result = Statistical::BINOMDIST(...$args);
self::assertEquals($expectedResult, $result, '', 1E-12);
}
public function providerBINOMDIST()
{
return require 'data/Calculation/Statistical/BINOMDIST.php';
}
/**
* @dataProvider providerCHIDIST
*
* @param mixed $expectedResult
*/
public function testCHIDIST($expectedResult, ...$args)
{
$result = Statistical::CHIDIST(...$args);
self::assertEquals($expectedResult, $result, '', 1E-12);
}
public function providerCHIDIST()
{
return require 'data/Calculation/Statistical/CHIDIST.php';
}
/**
* @dataProvider providerCHIINV
*
* @param mixed $expectedResult
*/
public function testCHIINV($expectedResult, ...$args)
{
$result = Statistical::CHIINV(...$args);
self::assertEquals($expectedResult, $result, '', 1E-12);
}
public function providerCHIINV()
{
return require 'data/Calculation/Statistical/CHIINV.php';
}
/**
* @dataProvider providerCONFIDENCE
*
* @param mixed $expectedResult
*/
public function testCONFIDENCE($expectedResult, ...$args)
{
$result = Statistical::CONFIDENCE(...$args);
self::assertEquals($expectedResult, $result, '', 1E-12);
}
public function providerCONFIDENCE()
{
return require 'data/Calculation/Statistical/CONFIDENCE.php';
}
/**
* @dataProvider providerCORREL
*
* @param mixed $expectedResult
*/
public function testCORREL($expectedResult, array $xargs, array $yargs)
{
$result = Statistical::CORREL($xargs, $yargs);
self::assertEquals($expectedResult, $result, '', 1E-12);
}
public function providerCORREL()
{
return require 'data/Calculation/Statistical/CORREL.php';
}
/**
* @dataProvider providerCOUNTIF
*
@ -141,6 +221,38 @@ class StatisticalTest extends TestCase
return require 'data/Calculation/Statistical/COUNTIFS.php';
}
/**
* @dataProvider providerCOVAR
*
* @param mixed $expectedResult
*/
public function testCOVAR($expectedResult, ...$args)
{
$result = Statistical::COVAR(...$args);
self::assertEquals($expectedResult, $result, '', 1E-12);
}
public function providerCOVAR()
{
return require 'data/Calculation/Statistical/COVAR.php';
}
/**
* @dataProvider providerFORECAST
*
* @param mixed $expectedResult
*/
public function testFORECAST($expectedResult, ...$args)
{
$result = Statistical::FORECAST(...$args);
self::assertEquals($expectedResult, $result, '', 1E-12);
}
public function providerFORECAST()
{
return require 'data/Calculation/Statistical/FORECAST.php';
}
/**
* @dataProvider providerMAXIFS
*

5
tests/data/Calculation/Statistical/AVERAGEIF.php
View File

@ -45,4 +45,9 @@ return [
[2012, 2012, 2013, 2011, 2011, 2010],
"<2013",
],
[
14000,
[7000, 14000, 'Hello World', 21000, 28000],
"<23000",
],
];

4
tests/data/Calculation/Statistical/BETADIST.php
View File

@ -9,4 +9,8 @@ return [
0.598190307617,
7.5, 8, 9, 5, 10,
],
[
0.685470581054,
2, 8, 10, 1, 3,
],
];

4
tests/data/Calculation/Statistical/BETAINV.php
View File

@ -9,4 +9,8 @@ return [
7.761240188783,
0.75, 8, 9, 5, 10,
],
[
2.0,
0.685470581055, 8, 10, 1, 3,
],
];

20
tests/data/Calculation/Statistical/BINOMDIST.php Normal file
View File

@ -0,0 +1,20 @@
<?php
return [
[
0.706399436132,
3, 8, 0.35, true,
],
[
0.538748204875,
50, 125, 0.4, true,
],
[
0.278585779062,
3, 8, 0.35, false,
],
[
0.205078125,
6, 10, 0.5, false,
],
];

16
tests/data/Calculation/Statistical/CHIDIST.php Normal file
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@ -0,0 +1,16 @@
<?php
return [
[
0.964294972685,
3, 9,
],
[
0.4837673815536,
7.5, 8,
],
[
0.050000589092,
18.307, 10,
],
];

16
tests/data/Calculation/Statistical/CHIINV.php Normal file
View File

@ -0,0 +1,16 @@
<?php
return [
[
8.383430828608,
0.3, 7,
],
[
6.737200771955,
0.75, 10,
],
[
18.30697345702,
0.050001, 10,
],
];

8
tests/data/Calculation/Statistical/CONFIDENCE.php Normal file
View File

@ -0,0 +1,8 @@
<?php
return [
[
0.692951912734,
0.05, 2.5, 50,
],
];

9
tests/data/Calculation/Statistical/CORREL.php Normal file
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@ -0,0 +1,9 @@
<?php
return [
[
0.997054485502,
[3, 2, 4, 5, 6],
[9, 7, 12, 15, 17],
],
];

14
tests/data/Calculation/Statistical/COVAR.php Normal file
View File

@ -0,0 +1,14 @@
<?php
return [
[
5.2,
[3, 2, 4, 5, 6],
[9, 7, 12, 15, 17],
],
[
1.25,
[[1, 2], [3, 4]],
[[5, 6], [7, 8]],
]
];

40
tests/data/Calculation/Statistical/FORECAST.php Normal file
View File

@ -0,0 +1,40 @@
<?php
return [
[
10.607253086419,
30,
[6, 7, 9, 15, 21],
[20, 28, 31, 38, 40],
],
[
11.8937852010975,
5,
[10.5, 7.2, 200, 5.4, 8.1],
[-3, 4, 120, 2, 7.5],
],
[
20.032698660553,
10,
[10.5, 7.2, 200, 5.4, 8.1],
[-3, 4, 120, 2, 7.5],
],
[
5.0,
8,
[1, 2, 3],
[4, 5, 6],
],
[
10.657142857143,
7,
[5.8, -1],
[2, -5],
],
[
-5.0,
50,
[-1, -2, -3, -4],
[10, 20, 30, 40],
],
];