Another statistical test that is very useful is the Analysis of Variance which is called ANOVA. ANOVA is used when you have two or more sample means that came from the same or equal populations. The conditions required to use ANOVA are that the sampled populations must follow the normal distribution, they must also have equal standard deviations, and the samples must be random and independent. The F distribution is the test statistic where either the null hypothesis is accepted if the means are the same or rejected if at least one of the means is different. The ANOVA formula is as follows: F = [SST/(k-1)/[SSE/(n-k)] where SST stands for the sum of squares and SSE is the sum of squares error.

Finally,…