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1 Markets I: The Ecosystem and Exchange-Traded Markets市场在线 2 Markets II: Rates, FX and Credit市场在线 3 Markets III: Commodities, Energy and Crypto市场在线 4 Quantitative Methods方法在线 5 Derivatives and Volatility衍生品在线 6 Rates, Credit, XVA and Risk利率、信用与风险在线 7 Research Craft: Predictors, Backtests, Measurement, Portfolios研究在线 8 Strategies I: Equities and Futures策略在线 9 Strategies II: Volatility, Relative Value, Macro and the Bank Desks策略在线 10 Microstructure and Execution交易执行在线 11 Market Making and High-Frequency Trading做市在线 12 Machine Learning for Markets机器学习在线 13 Low-Latency Software技术在线 14 Networks, Hardware and Trading Infrastructure技术在线 15 Research, Data and Risk Platforms技术在线 16 The Desk and the Firm公司运营在线 17 The Industry: Firms, Roles and Careers职业发展在线 18 Interviews I: Maths, Probability and Speed职业发展在线 19 Interviews II: Markets, Trading Games and the Final Round职业发展在线 20 Interviews III: Code职业发展在线

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Earth and Space Sciences · 术语表

什么是 Mean square of weighted deviates？

Definition 13.14 University Earth and Space Sciences — Year 3 · 第 13 章 — Advanced Geochronology

The mean square of weighted deviates (MSWD) of $n$ measurements about a fitted model with $p$ adjusted parameters is

\mathrm{MSWD} = \frac{1}{n - p}\sum_i \frac{(x_i - \hat x_i)^2}{\sigma_i^2},

where $\hat x_i$ is the model value: $p = 1$ for a weighted mean, $p = 2$ for a straight line such as an isochron or a discordia.

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