public void IsPassingChiSquaredTest_GivenObservedSetExpectedSetAndAlfa_ReturnsFalse()
{
ChiSquared chi = new ChiSquared();
// #1, #2, #3, #4, #5, #6
double[] observedSet = { 22, 24, 38, 30, 46, 44 };
double[] expectedSet = { 34, 34, 34, 34, 34, 34 };
double alfa = 0.01;
var result = chi.IsPassingChiSquaredTest(observedSet, expectedSet, alfa);
Assert.IsFalse(result);
}
public void IsPassingChiSquaredTest_WhenObservedAndExpectedSetsAreSame_Throws()
{
ChiSquared chi = new ChiSquared();
// #1,#2,#3,#4,#5,#6
double[] observedSet = { 1, 1, 1, 1, 1, 1 };
double[] expectedSet = { 1, 1, 1, 1, 1, 1 };
double alfa = 0.01;
TestDelegate result = () => chi.IsPassingChiSquaredTest(observedSet, expectedSet, alfa);
Assert.Throws <ArgumentException>(result);
}
public void IsPassingChiSquaredTest_GivenObservedSetExpectedSetAndAlfa_ReturnsTrue()
{
ChiSquared chi = new ChiSquared();
// #1, #2, #3, #4, #5, #6
double[] observedSet = { 43, 39, 42, 37, 41, 44 };
double[] expectedSet = { 41, 41, 41, 41, 41, 41 };
double alfa = 0.01;
var result = chi.IsPassingChiSquaredTest(observedSet, expectedSet, alfa);
Assert.IsTrue(result);
}
public void GetRandomNumber_ChiSquaredTestWith12000Tries_ReturnsTrue()
{
var randomizer = new Randomizer();
var chiSquared = new ChiSquared();
var observedResults = new double[6];
var expectedResults = new double[] { 2000, 2000, 2000, 2000, 2000, 2000 };
var alfa = 0.01; // very restricted
for (int i = 0; i < 12000; i++)
{
var indexToIncrement = randomizer.GetRandomNumber(1, 6) - 1;
observedResults[indexToIncrement]++;
}
var result = chiSquared.IsPassingChiSquaredTest(observedResults, expectedResults, alfa);
Assert.IsTrue(result);
}