Study the information provided below and answer the following question. After an extensive review of the literature on tourism operations, an organisational researcher has found inconclusive findings about the effect of the level of customer satisfaction on financial performance in the tourism industry across Southern Africa. In this regard, the organisational researcher is investigating the impact of customer satisfaction on the financial performance (i.e., quarterly revenue) of A2Z frontiers Inc., a hospitality firm operating in a Southern African country. As part of the data collection for the study, the researcher measured the quarterly aggregate customer satisfaction index (CSI) of the firm's customers and the firm's quarterly revenue for the period, 2015 - 2019. The customer satisfaction index and the quarterly revenue were measured on interval and ratio levels respectively. Table 2.1, below, shows the research data gathered by the researcher. Table 2.1: Data on Quarterly Customer Satisfaction (%) and Quarterly Revenue