analistica/slides/sections/1.md

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Goal

Goal

Construct six statistical tests to assert whether a sample comes from a Landau distribution

. . .

  • Generate a sample L from a Landau PDF
  • Generate a sample M from a Moyal PDF

. . .

H_0: sample following Landau PDF

  • can we accept H_0 for L?
  • can we reject H_0 for M?

Why Moyal?

The Landau and Moyal PDFs are really similar. Historically, the latter was utilized as an approximation of the former.

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Two similar distributions

:::: {.columns} ::: {.column width=50%} Landau PDF

$$
  L(x) = \frac{1}{\pi} \int \limits_{0}^{+ \infty}
         dt \, e^{-t \ln(t) -xt} \sin (\pi t)

:::

::: {.column width=50%} Moyal PDF

$$
M(x) = \frac{1}{\sqrt{2 \pi}} \exp \left[ - \frac{1}{2}
       \left( x + e^{- x} \right) \right]

::: ::::

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Two similar distributions

Statistical tests

. . .

  • Properties test:

    compatibility between expected and observed PDF properties

. . .

  • Kolmogorov - Smirnov test:

    compatibility between expected and empirical CDF

. . .

  • Trapani test:

    test for finite or infinite moments