- Last 7 days
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www.econometrics-with-r.org www.econometrics-with-r.org
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σ2^β1=1nVar[(Xi−μX)ui][Var(Xi)]2.
This formula is wrong. It should be as follows: $$Var(\hat{\beta}1) = \frac{\sum{i=1}^N Var(x_i - \bar{x})^2 u_i}{(Var(\sum_{i=1}^N (x_i - \bar{x})^2))}$$
Otherwise, $\sigma_{\hat{\beta}_1}$ is different for each $u_i$.
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- Aug 2023
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engineering.universe.com engineering.universe.com
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def rating(like_count, angry_count) like_count * 2 - angry_count end
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math.stackexchange.com math.stackexchange.com
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so a formula is like a dead equation?
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- Dec 2021
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blogs.dickinson.edu blogs.dickinson.edu
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average sentence complexity
Formula: total # of punctuation marks used / total # of sentences
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average sentence length
Formula: total # of words / total # of sentences
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average line length
Formula: total # of words / total # of lines
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hapax legomena ratio
Formula: # of words that appear exactly once/total # of words
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type-token ratio
Formula: total # of distinct words / total # of words
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- Apr 2021
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www.bio-rad.com www.bio-rad.com
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Formula for Calculating Concentration
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- Sep 2020
- Oct 2019
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understandinguncertainty.org understandinguncertainty.org
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probability compounds
compound probability = 1 - (1 - annual probability of excedence)^n where:
- annual probability = 0.01
- n = exposure period = 10 years
by other hand Mean Recurrence Interval - MRI = Return Period = 1 / annual probability of exceedence, but only if MRI >= 10 years, if not then:
annual probability of excedence = 1-e(-1/MRI)
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- Mar 2019
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www.colciencias.gov.co www.colciencias.gov.co
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Indicador de cohesión del grupo (IC
Si el grupo tiene un investigador que no produce, el resultado será inferior. Hay una relación entre el autor y sus productos.
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2.7.Indicadores de producción (ITP
Revisar la fórmula de medición presentada en la página siguiente.
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- Nov 2018
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en.wikipedia.org en.wikipedia.org
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Net profit: To calculate net profit for a venture (such as a company, division, or project), subtract all costs, including a fair share of total corporate overheads, from the gross revenues or turnover. Net profit = sales revenue − total costs
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- May 2017
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by the Gauss formula we have(4.8)eRslij=hsihlj−hlihsj.
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terrytao.wordpress.com terrytao.wordpress.com
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the variations of various tensors under the Ricci flow: (31)
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variation formula for the Ricci tensor (13) where is the trace, and the Lichnerowicz Laplacian (or Hodge-de Rham Laplacian) on symmetric rank (0,2) tensors is defined by the formula (14) and is the usual connection Laplacian.
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- Nov 2013
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cran.r-project.org cran.r-project.org
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n its space-time representation (Ogata, 1998), the ETASmodel is a temporal marked point process model, and a special case of marked Hawks process, withconditional intensity function(t;x;yjHt) =(x;y) +Xti<tk(mi)g(tti)f(xxi;yyijmi)
Testing out PDF annotation that also include LaTeX rendered formulas.
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