People substitute various combinations of cinnamon, nutmeg, allspice, coriander, and ginger, but you won't get something that tastes like cardamom. Not that it won't be good, it just won't be cardamom. Scout around for ethnic markets; it will often be cheaper there. Middle Eastern or Indian are what I'd try first.
The t-test and the one-way analysis of variance (ANOVA) are the two most common tests used for this purpose. The t-test is a statistical hypothesis test where the test statistic follows a Studentâs t distribution if the null hypothesis is supported. This test is applied when the test statistic follows a normal distribution and the value of a scaling term in the test statistic is known.
At this point, it is important to realize that the one-way ANOVA is an omnibus test statistic and cannot tell you which specific groups were significantly different from each other, only that at least two groups were. To determine which specific groups differed from each other, you need to use a post hoc test.