In: Statistics and Probability
You are assigned to compare call times between two different groups. What questions must you evaluate prior to selecting the appropriate statistical test? What are the risks of selecting the wrong test? Illustrate by providing specific examples.
The call time between the two different groups will depend on the following factors as per me:
Drawing contingency tables with a proper chi-squared test can give an excellent estimate of association or dissociation. against or in favor of the null hypothesis. In R, drawing contingency tables with viewing p values can help one estimate if there is an association or not. If the p-value is less than say 0.05, then it's safe to assume there is an association rejecting the null hypothesis and if not, we can't reject the null hypothesis but at the same time won't blindly accept the null hypothesis either.