1 package Math::GSL::Statistics::Test;
2 use Math::GSL::Test qw/:all/;
3 use base q{Test::Class};
5 use Math::GSL::Statistics qw/:all/;
6 use Math::GSL::Sort qw/:all/;
7 use Math::GSL qw/:all/;
10 sub make_fixture : Test(setup) {
26 sub teardown : Test(teardown) {
29 sub GSL_STATS_MEAN : Tests {
30 ok_similar( gsl_stats_mean([2 .. 5], 1, 4), 3.5 );
33 sub GSL_STATS_VARIANCE : Tests {
34 ok_similar( gsl_stats_variance([2 .. 5], 1, 4), 5/3);
37 sub GSL_STATS_SD : Tests {
39 ok_similar( gsl_stats_sd($self->{data}, 1, 20) , 3.79750610685209);
42 sub GSL_STATS_ABSDEV : Tests {
44 my $x = gsl_stats_absdev($self->{data},1, 20);
48 sub GSL_STATS_SKEW : Tests {
50 my $x = gsl_stats_skew($self->{data}, 1, 20);
51 ok_similar($x, -0.909355923168064);
54 sub GSL_STATS_KURTOSIS : Tests {
56 my $x = gsl_stats_kurtosis($self->{data}, 1, 20);
57 ok_similar_relative($x, -0.233692524908094);
60 sub GSL_STATS_COVARIANCE : Tests {
62 my $x = gsl_stats_covariance($self->{data}, 1, $self->{datab}, 1, 20);
63 ok_similar_relative($x, 14.5263157894737);
66 sub GSL_STATS_CORRELATION : Tests {
68 my $x = gsl_stats_correlation($self->{data}, 1, $self->{datab}, 1, 20);
69 ok_similar_relative($x, 0.793090350710101);
72 sub GSL_STATS_PVARIANCE : Tests {
74 my $x = gsl_stats_pvariance($self->{data}, 1, 20, $self->{datab}, 1, 20);
75 ok_similar_relative($x, 18.8421052631579);
78 sub GSL_STATS_TTEST : Tests {
80 my $x = gsl_stats_ttest($self->{data}, 1, 20, $self->{datab}, 1, 20);
81 ok_similar_relative($x, -1.45701922702927);
84 sub GSL_STATS_MAX : Tests {
86 my $x = gsl_stats_max($self->{data}, 1, 20);
87 ok_similar_relative($x, 22);
90 sub GSL_STATS_MIN : Tests {
92 my $x = gsl_stats_min($self->{data}, 1, 20);
93 ok_similar_relative($x, 8);
96 sub GSL_STATS_MINMAX : Tests {
98 my ($min, $max) = gsl_stats_minmax($self->{data}, 1, 20);
99 ok_similar_relative($max, 22);
100 ok_similar_relative($min, 8);
103 sub GSL_STATS_MAX_INDEX : Tests {
105 my $x = gsl_stats_max_index($self->{data}, 1, 20);
106 ok_similar_relative($x, 9);
109 sub GSL_STATS_MIN_INDEX : Tests {
111 my $x = gsl_stats_min_index($self->{data}, 1, 20);
112 ok_similar_relative($x, 12);
115 sub GSL_STATS_MINMAX_INDEX : Tests {
117 my ($min, $max) = gsl_stats_minmax_index($self->{data}, 1, 20);
118 ok_similar_relative($min, 12);
119 ok_similar_relative($max, 9);
122 sub GSL_STATS_MEDIAN_FROM_SORTED_DATA_EVEN : Tests {
124 my $sorted = gsl_sort($self->{data}, 1, 20);
125 my $x = gsl_stats_median_from_sorted_data($sorted, 1, 20);
126 ok_similar_relative($x, 18);
129 sub GSL_STATS_MEDIAN_FROM_SORTED_DATA_ODD : Tests {
131 my $sorted = gsl_sort($self->{data}, 1, 20);
132 my $x = gsl_stats_median_from_sorted_data($sorted, 1, 19);
133 ok_similar_relative($x, 18);
136 sub GSL_STATS_QUANTILE_FROM_SORTED_DATA_0 : Tests {
138 my $sorted = gsl_sort($self->{data}, 1, 20);
139 my $x = gsl_stats_quantile_from_sorted_data($sorted, 1, 20, 0);
140 ok_similar_relative($x, 8);
143 sub GSL_STATS_QUANTILE_FROM_SORTED_DATA_100 : Tests {
145 my $sorted = gsl_sort($self->{data}, 1, 20);
146 my $x = gsl_stats_quantile_from_sorted_data($sorted, 1, 20, 1);
147 ok_similar_relative($x, 22);
150 sub GSL_STATS_QUANTILE_FROM_SORTED_DATA_50_EVEN : Tests {
152 my $sorted = gsl_sort($self->{data}, 1, 20);
153 my $x = gsl_stats_quantile_from_sorted_data($sorted, 1, 20, 0.5);
154 ok_similar_relative($x, 18);
157 sub GSL_STATS_QUANTILE_FROM_SORTED_DATA_50_ODD : Tests {
159 my $sorted = gsl_sort($self->{data}, 1, 20);
160 my $x = gsl_stats_quantile_from_sorted_data($sorted, 1, 20, 0.5);
161 ok_similar_relative($x, 18);
164 sub GSL_STATS_LAG1_AUTOCORRELATION : Tests {
168 $numacc3->[0] = 1000000.2 ;
169 for ($i = 1 ; $i < 1000 ; $i += 2) {
170 $numacc3->[$i] = 1000000.1 ;
171 $numacc3->[$i+1] = 1000000.3 ;
173 my $mean = gsl_stats_mean ($numacc3, 1, $nacc3);
174 my $sd = gsl_stats_sd ($numacc3, 1, $nacc3);
175 my $lag1 = gsl_stats_lag1_autocorrelation ($numacc3, 1, $nacc3);
177 my $expected_mean = 1000000.2;
178 my $expected_sd = 0.1;
179 my $expected_lag1 = -0.999;
181 ok_similar_relative($mean, $expected_mean);
182 ok_similar_relative($sd, $expected_sd);
183 ok_similar_relative($lag1, $expected_lag1);
186 sub GSL_STATS_WMEAN : Tests {
187 my $w = [4, 4, 2, 2];
188 my $data = [2, 3, 4, 5];
189 my $mean = gsl_stats_wmean($w, 1, $data, 1, 4);
190 ok_similar ($mean, 19/6);
193 Test::Class->runtests;