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stats: Add support for the interquartile range (IQR)

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IQR is a good measure of dispersion.

Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
This commit is contained in:
Damien Lespiau
2015-06-27 15:49:26 +01:00
parent 1b8997b3f8
commit fabde384a3
3 changed files with 20 additions and 1 deletions
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lib/tests/igt_stats.c
+2
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@@ -102,6 +102,7 @@ static void test_quartiles(void)
igt_assert_eq_double(q2, 40);
igt_assert_eq_double(q3, 42.5);
igt_assert_eq_double(igt_stats_get_median(&stats), 40);
igt_assert_eq_double(igt_stats_get_iqr(&stats), 42.5 - 25.5);
igt_stats_fini(&stats);
@@ -114,6 +115,7 @@ static void test_quartiles(void)
igt_assert_eq_double(q2, 37.5);
igt_assert_eq_double(q3, 40);
igt_assert_eq_double(igt_stats_get_median(&stats), 37.5);
igt_assert_eq_double(igt_stats_get_iqr(&stats), 40 - 15);
igt_stats_fini(&stats);
}