This paper examines the efficiency of alternative energy equity Exchange-Traded Funds (ETFs) and conventional energy equity ETFs from 2018 to 2020. utilizing a combination of an output-oriented Slack-Based Data Envelopment Analysis (DEA) model and cluster analysis. In the context of an output-oriented DEA model. efficiency is defined as the ability of an ETF to maximize its outputs (a... https://www.markymarkscott.com/product-category/8-04-n/
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