Discuss, justify, and briefly illustrate in writing how the three statistical methods can help with decision making for theselected business. This is essentially the same as evaluating the hypotheses (claims/beliefs) that would have been made by those constructing the dashboards.

For example, in the pie chart case, executives may have claimed that sales performance was essentially the same globally (a hypothesis/claim). Now that management have found out that there are differences, they will have to decide whether to keep focussing and building on the success in Europe or put more energy into improving sales in Asia.