public void testBasicStats() {
ScalarSampleStatistics sample = new ScalarSampleStatistics();
for (int i = 0; i < points.length; ++i) {
sample.add(points[i]);
}
assertEquals(points.length, sample.size());
assertEquals(-5.0, sample.getMin(), 1.0e-12);
assertEquals(10.4, sample.getMax(), 1.0e-12);
assertEquals(3.0, sample.getMean(), 1.0e-12);
assertEquals(3.920034013457876, sample.getStandardDeviation(), 1.0e-12);
}
public void testAddArray() {
ScalarSampleStatistics loop = new ScalarSampleStatistics();
ScalarSampleStatistics direct = new ScalarSampleStatistics();
for (int i = 0; i < points.length; ++i) {
loop.add(points[i]);
}
direct.add(points);
assertEquals(loop.size(), direct.size());
assertEquals(loop.getMin(), direct.getMin(), 1.0e-12);
assertEquals(loop.getMax(), direct.getMax(), 1.0e-12);
assertEquals(loop.getMean(), direct.getMean(), 1.0e-12);
assertEquals(loop.getStandardDeviation(), direct.getStandardDeviation(), 1.0e-12);
}
public void testAddSample() {
ScalarSampleStatistics all = new ScalarSampleStatistics();
ScalarSampleStatistics even = new ScalarSampleStatistics();
ScalarSampleStatistics odd = new ScalarSampleStatistics();
for (int i = 0; i < points.length; ++i) {
all.add(points[i]);
if (i % 2 == 0) {
even.add(points[i]);
} else {
odd.add(points[i]);
}
}
even.add(odd);
assertEquals(all.size(), even.size());
assertEquals(all.getMin(), even.getMin(), 1.0e-12);
assertEquals(all.getMax(), even.getMax(), 1.0e-12);
assertEquals(all.getMean(), even.getMean(), 1.0e-12);
assertEquals(all.getStandardDeviation(), even.getStandardDeviation(), 1.0e-12);
}
