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Arif

  • 12:19:08 pm on August 22, 2010 | # | 0
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    If we assume a normally distributed population with mean μ and standard deviation σ, and take sample

    x_{1}, x_{2},..., x_{n}\sim N(\mu,\sigma^{2})

    statistical error is then
    \varepsilon_{i}=x_{i}-\mu

    Residual

    while residual is
    \hat{\varepsilon}_{i}=x_{i}-\bar{x}

    hat over the letter ε indicates an observable estimate of an unobservable quantity called ε.

     

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