Question

A researcher is interested in determining whether there is a relationship between the weekly number of room air-conditioning units sold and the time of year. What type of descriptive chart would be most useful in performing this analysis? Explain your choice.

Answer 1

In performing this analysis, a time series plot or a scatter plot would be most useful, because we would be able to determine whether the weekly sales count of room air-conditioning units varies with respect to the time of year. In fact, if there indeed a relationship we will see that the weekly sales will increase rapidly in the summer months and decrease rapidly in the winter months.