What type of data does the STAT metric provide regarding the global economy?

The STAT metric is designed to provide insights into macroeconomic data, particularly focusing on the overall economic performance of countries and the world economy as a whole. By examining world GDP alongside individual country GDP figures, STAT enables users to analyze economic growth, compare the economic output of different nations, and assess the impact of various factors on global economic health. This data is crucial for investors, policymakers, and economists as it highlights trends in economic activity and enables informed decision-making regarding investments and policy interventions.

The other options do not align with the primary focus of the STAT metric. While comparisons of global corporations and retail sales statistics may be important aspects of economic analysis, they do not encompass the comprehensive data on GDP that STAT provides. Additionally, trends in consumer purchasing, while significant for understanding economic behavior, are more specific and do not represent the broader economic indicators captured by GDP figures. Thus, B reflects the correct scope of the STAT metric's data offering.