Commit b01f67a5 authored by Arnaud Legrand's avatar Arnaud Legrand

Use orgmode instead of markdown

parent 27db58c7
In this project, we gather reproduction attempts from the Challenger
study. In particular, we try to reperform some of the analysis
provided in *Risk Analysis of the Space Shuttle: Pre-Challenger
Prediction of Failure* by *Siddhartha R. Dalal, Edward B. Fowlkes,
Bruce Hoadley* published in *Journal of the American Statistical
Association*, Vol. 84, No. 408 (Dec., 1989), pp. 945-957 and available
at
[https://studies2.hec.fr/jahia/webdav/site/hec/shared/sites/czellarv/acces_anonyme/OringJASA_1989.pdf](here)
(here is [http://www.jstor.org/stable/2290069](the official JASA
webpage)).
Prediction of Failure* by *Siddhartha R. Dalal, Edward B. Fowlkes, Bruce
Hoadley* published in *Journal of the American Statistical Association*,
Vol. 84, No. 408 (Dec., 1989), pp. 945-957 and available at [[https://studies2.hec.fr/jahia/webdav/site/hec/shared/sites/czellarv/acces_anonyme/OringJASA_1989.pdf][here]] (here
is [[http://www.jstor.org/stable/2290069][the official JASA webpage]])
On the fourth page of this article, they indicate that the maximum
likelihood estimates of the logistic regression using only temperature
are: $\hat{\alpha}=5.085$ and $\hat{\beta}=-0.1156$ and their
asymptotic standard errors are $s_{\hat{\alpha}}=3.052$ and
$s_{\hat{\beta}}=0.047$. The Goodness of fit indicated for this model
was $G^2=18.086$ with 21 degrees of freedom. Our goal is to reproduce
was $G^{2}=18.086$ with 21 degrees of freedom. Our goal is to reproduce
the computation behind these values and the Figure 4 of this article,
possibly in a nicer looking way.
[**Here is our successful replication of Dalal et al. results using
R**](file:challenger.pdf).
*[[file:challenger.pdf][Here is our successful replication of Dalal et al. results using R]]*.
In case it helps, we provide you with two implementations of this case
study but we encourage you to **reimplement them by yourself** using both
study but we encourage you to *reimplement them by yourself* using both
your favourite language and an other language you do not know yet.
- A [Jupyter Python3 notebook](file:src/Python3/challenger.ipynb)
- An [Rmarkdown document](file:src/R/challenger.Rmd)
- A [[file:src/Python3/challenger.ipynb][Jupyter Python3 notebook]]
- An [[file:src/R/challenger.Rmd][Rmarkdown document]]
Then **update the [meta-study result table available
here](file:results.org) with your own results**.
Then *update the [[file:results.org][meta-study result table available here]] with your own
results*.
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