How are a single-cell thunderstorm and a multiple-cell thunderstorm different? Answers should include the following ideas: *single-cell thunderstorm - one updraft system (cell); goes through cumulus, mature, and dissipating stages; often lasts less than an hour *multiple-cell thunderstorm - multiple updraft systems (cell); each cell goes through the cumulus, mature and dissipating stages, with new cells forming as old cells die; may last several hours What type of hygrometer measures humidity using the cooling effect of evaporating water?
Portfolio (finance) In finance, a portfolio is a collection of investments held by an investment company, hedge fund, financial institution or individual.
Standard Deviation and Finance. Perhaps standard deviation is the most important concepts as far as finance is concerned. Finance and banking is all about measuring and managing risk and standard deviation measures risk (Volatility). Standard deviation is used by all portfolio managers to measure and track risk. One of the most important ratios in portfolio management, Sharpe Ratio (for which William Sharpe got a Nobel Prize) uses Standard Deviation to measure risk adjusted return (and hence provides incentives to portfolio managers to generate return by taking minimum risk).