Efficiency rankings used by governments and businesses may not be accurate, according to new research

For decades, governments, banks, hospitals and schools have relied on data tools to decide who is efficient and who is not.
Nature

Data Envelopment Analysis and Efficiency Measurement

Data Envelopment Analysis (DEA) is a non‐parametric technique for assessing the relative efficiency of decision making units (DMUs) by comparing the ratio of multiple inputs to outputs. Since its ...