Identify and describe any patterns that are evident in the quarterly sales data. The following steps have been done for you and the results presented in a table of results below. Students are encouraged to reproduce these results for additional insight.

Briefly summarize the data (include an explanation of the results of descriptive statistics of the data, variables included, how the data was collected, and any pertinent information about the data available in the case study) Identify the central issue in the case. Plot the quarterly sales for the past 15 years for Wagner Machine Works.