PHP code example of hi-folks / statistics

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

    

hi-folks / statistics example snippets

use HiFolks\Statistics\Stat;
$mean = Stat::mean([1, 2, 3, 4, 4]);
// 2.8
$mean = Stat::mean([-1.0, 2.5, 3.25, 5.75]);
// 2.625

use HiFolks\Statistics\Stat;
$mean = Stat::geometricMean([54, 24, 36], 1);
// 36.0

use HiFolks\Statistics\Stat;
$mean = Stat::harmonicMean([40, 60], null, 1);
// 48.0

use HiFolks\Statistics\Stat;
Stat::harmonicMean([40, 60], [5, 30], 1);
// 56.0

use HiFolks\Statistics\Stat;
$median = Stat::median([1, 3, 5]);
// 3
$median = Stat::median([1, 3, 5, 7]);
// 4

use HiFolks\Statistics\Stat;
$median = Stat::medianLow([1, 3, 5]);
// 3
$median = Stat::medianLow([1, 3, 5, 7]);
// 3

use HiFolks\Statistics\Stat;
$median = Stat::medianHigh([1, 3, 5]);
// 3
$median = Stat::medianHigh([1, 3, 5, 7]);
// 5

use HiFolks\Statistics\Stat;
$quantiles = Stat::quantiles([98, 90, 70,18,92,92,55,83,45,95,88]);
// [ 55.0, 88.0, 92.0 ]
$quantiles = Stat::quantiles([105, 129, 87, 86, 111, 111, 89, 81, 108, 92, 110,100, 75, 105, 103, 109, 76, 119, 99, 91, 103, 129,106, 101, 84, 111, 74, 87, 86, 103, 103, 106, 86,111, 75, 87, 102, 121, 111, 88, 89, 101, 106, 95,103, 107, 101, 81, 109, 104], 10);
// [81.0, 86.2, 89.0, 99.4, 102.5, 103.6, 106.0, 109.8, 111.0]

use HiFolks\Statistics\Stat;
$percentile = Stat::firstQuartile([98, 90, 70,18,92,92,55,83,45,95,88]);
// 55.0

use HiFolks\Statistics\Stat;
$percentile = Stat::thirdQuartile([98, 90, 70,18,92,92,55,83,45,95,88]);
// 92.0

use HiFolks\Statistics\Stat;
$stdev = Stat::pstdev([1.5, 2.5, 2.5, 2.75, 3.25, 4.75]);
// 0.986893273527251
$stdev = Stat::pstdev([1.5, 2.5, 2.5, 2.75, 3.25, 4.75], 4);
// 0.9869

use HiFolks\Statistics\Stat;
$stdev = Stat::stdev([1.5, 2.5, 2.5, 2.75, 3.25, 4.75]);
// 1.0810874155219827
$stdev = Stat::stdev([1.5, 2.5, 2.5, 2.75, 3.25, 4.75], 4);
// 1.0811

use HiFolks\Statistics\Stat;
$variance = Stat::variance([2.75, 1.75, 1.25, 0.25, 0.5, 1.25, 3.5]);
// 1.3720238095238095

use HiFolks\Statistics\Stat;
$variance = Stat::pvariance([0.0, 0.25, 0.25, 1.25, 1.5, 1.75, 2.75, 3.25]);
// 1.25

$covariance = Stat::covariance(
    [1, 2, 3, 4, 5, 6, 7, 8, 9],
    [1, 2, 3, 1, 2, 3, 1, 2, 3]
);
// 0.75

$covariance = Stat::covariance(
    [1, 2, 3, 4, 5, 6, 7, 8, 9],
    [9, 8, 7, 6, 5, 4, 3, 2, 1]
);
// -7.5

$correlation = Stat::correlation(
    [1, 2, 3, 4, 5, 6, 7, 8, 9],
    [1, 2, 3, 4, 5, 6, 7, 8, 9]
);
// 1.0

$correlation = Stat::correlation(
    [1, 2, 3, 4, 5, 6, 7, 8, 9],
    [9, 8, 7, 6, 5, 4, 3, 2, 1]
);
// -1.0

$years = [1971, 1975, 1979, 1982, 1983];
$films_total = [1, 2, 3, 4, 5]
list($slope, $intercept) = Stat::linearRegression(
    $years,
    $films_total
);
// 0.31
// -610.18

round($slope * 2022 + $intercept);
// 17.0

use HiFolks\Statistics\Freq;

$fruits = ['🍈', '🍈', '🍈', '🍉','🍉','🍉','🍉','🍉','🍌'];
$freqTable = Freq::frequencies($fruits);
print_r($freqTable);

$freqTable = Freq::relativeFrequencies($fruits, 2);
print_r($freqTable);

$data = [1,1,1,4,4,5,5,5,6,7,8,8,8,9,9,9,9,9,9,10,10,11,12,12,
    13,14,14,15,15,16,16,16,16,17,17,17,18,18, ];
$result = \HiFolks\Statistics\Freq::frequencyTableBySize($data, 4);
print_r($result);
/*
Array
(
    [1] => 5
    [5] => 8
    [9] => 11
    [13] => 9
    [17] => 5
)
 */

$data = [1,1,1,4,4,5,5,5,6,7,8,8,8,9,9,9,9,9,9,10,10,11,12,12,
    13,14,14,15,15,16,16,16,16,17,17,17,18,18, ];
$result = \HiFolks\Statistics\Freq::frequencyTable($data, 5);
print_r($result);
/*
Array
(
    [1] => 5
    [5] => 8
    [9] => 11
    [13] => 9
    [17] => 5
)
 */

$stat = HiFolks\Statistics\Statistics::make(
    [3,5,4,7,5,2]
);
echo $stat->valuesToString(5) . PHP_EOL;
// 2,3,4,5,5
echo "Mean              : " . $stat->mean() . PHP_EOL;
// Mean              : 4.3333333333333
echo "Count             : " . $stat->count() . PHP_EOL;
// Count             : 6
echo "Median            : " . $stat->median() . PHP_EOL;
// Median            : 4.5
echo "First Quartile  : " . $stat->firstQuartile() . PHP_EOL;
// First Quartile  : 2.5
echo "Third Quartile : " . $stat->thirdQuartile() . PHP_EOL;
// Third Quartile : 5
echo "Mode              : " . $stat->mode() . PHP_EOL;
// Mode              : 5

use HiFolks\Statistics\Statistics;

$s = Statistics::make(
    [98, 90, 70,18,92,92,55,83,45,95,88,76]
);
$a = $s->frequencies();
print_r($a);
/*
Array
(
    [18] => 1
    [45] => 1
    [55] => 1
    [70] => 1
    [76] => 1
    [83] => 1
    [88] => 1
    [90] => 1
    [92] => 2
    [95] => 1
    [98] => 1
)
 */

$a = $s->relativeFrequencies();
print_r($a);
/*
Array
(
    [18] => 8.3333333333333
    [45] => 8.3333333333333
    [55] => 8.3333333333333
    [70] => 8.3333333333333
    [76] => 8.3333333333333
    [83] => 8.3333333333333
    [88] => 8.3333333333333
    [90] => 8.3333333333333
    [92] => 16.666666666667
    [95] => 8.3333333333333
    [98] => 8.3333333333333
)
 */