Tortoriello and O'Shaughnessy also noted a higher level of volatility when ROE is used as the sole indicator for finding stocks that will outperform.
Our research shows that high levels of volatility and disagreement in the polls make polling aggregation methods less reliable.
Some regions of inequality and wealth deliver long term persistence of organization form and inequality, while other regions deliver high levels of volatility.
An exam board is calling for league tables to judge schools on five years' worth of results, rather than one, after it found "surprisingly high levels" of volatility year on year.
Chief executive Michael Spencer said: Due to continuing political and economic uncertainty we expect the recent high levels of volatility in financial markets to continue for the rest of the year.
The increased penetration of volatile and intermittent renewable energy sources challenges existing power-distribution methods as current dispatch methods were not designed to consider high levels of volatility.
"If the stock market continues to exhibit high levels of volatility," he said, "people may pull their money out of equities and, instead, invest in real estate, thereby stabilizing prices".
Even though the market occasionally offers high levels of volatility and great price swings that can be profited from, remember that volatility measures risk.
