From b8074968dc7514e2c9bd9769bd6920bc14a72b40 Mon Sep 17 00:00:00 2001
From: "elisabetta.ronchiri@gmail.com" <elisabetta.ronchiri@gmail.com>
Date: Thu, 23 Feb 2017 05:16:23 +0100
Subject: [PATCH] added files
---
esempiII/parteII.pdf | Bin 57324 -> 57322 bytes
esempiII/parteII.tex | 76 +++++++++++++++++++++++++++++++++++++++++++
2 files changed, 76 insertions(+)
create mode 100644 esempiII/parteII.tex
diff --git a/esempiII/parteII.pdf b/esempiII/parteII.pdf
index e04ba10737a7fddb97c399920814f8150fc2f8c1..cff2287a16ba348a54a821da642fbf86a58f83f3 100644
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diff --git a/esempiII/parteII.tex b/esempiII/parteII.tex
new file mode 100644
index 0000000..5c650b3
--- /dev/null
+++ b/esempiII/parteII.tex
@@ -0,0 +1,76 @@
+\documentclass{article}
+
+
+\usepackage{listings}
+\usepackage{color}
+
+\newcounter{problem}
+\newcounter{solution}
+
+\newcommand\Problem{%
+ \stepcounter{problem}%
+ \textbf{Esercizio \theproblem.}~%
+ %\textbf{Esercizio}
+ \setcounter{solution}{0}%
+}
+
+\newcommand\TheSolution{%
+ \textbf{Soluzione:}\\%
+}
+
+\newcommand\ASolution{%
+ \stepcounter{solution}%
+ \textbf{Soluzione \thesolution:}\\%
+}
+\parindent 0in
+\parskip 1em
+\begin{document}
+
+\textbf{Parte II}
+
+\textbf{Traccia.} Una azienda vuole studiare l'affidabilit\`a di un apparato elettronico di propria produzione e seleziona casualmente 12 unit\`a di prodotto finito rilevandone i tempi di guasto in mesi. La seguente tabella riporta i dati dell'esperimento:
+
+\[ \begin{array}{cc}
+Apparecchio & Tempo_{guasto} \\
+ A & 9.1\\
+ B & 14.0\\
+ C & 14.4\\
+ D & 14.8\\
+ E & 12.8\\
+ F & 16.3\\
+ G & 7.2\\
+ H & 13.7\\
+ I & 17.2\\
+ L & 17.6\\
+ M & 11.1\\
+ N & 16.0\end{array} \]
+
+\Problem
+\begin{enumerate}
+\item Costuire due vettori {\color{blue}apparecchio} e {\color{blue}tempo.guasto} con i dati sopra riportati.
+\item Valutare la media e la mediana del tempo di guasto tramite le funzioni {\color{blue}mean()} e {\color{blue}median()} rispettivamente, definendo opportune variabili.
+\item Determinare il primo e terzo quartile del tempo di guasto con la funzione {\color{blue}quantile()}, definendo opportune variabili.
+\end{enumerate}
+
+\Problem Inserire i dati dei due vettori in un file {\color{blue}guasti.csv} con formato csv.
+\begin{enumerate}
+\item Leggere il file, assegnando il contenuto alla variabile {\color{blue}guasti}.
+\item Applicare la funzione {\color{blue}summary()} alla variabile {\color{blue}guasti} e confrontare i valori ottenuti con le variabili corrispondenti definite nell'Esercizio 1.
+\end{enumerate}
+
+\Problem Effettuare la rappresentazione grafica dei dati come risultato delle seguenti chiamate: {\color{blue}plot()} a {\color{blue}tempo.guasto}.
+
+\Problem Effettuare la rappresentazione grafica dei dati, utilizzando la funzione {\color{blue}barplot()}.
+
+\Problem Aggiungere alla variabile {\color{blue}guasti} il componente {\color{blue}Date} le cui date vanno dal 1 Dicembre 2016 a ritroso fino a coprire il numero di righe della variabile {\color{blue}guasti}. Effettuare la rappresentazione grafica dell'esercizio 3 riportando sull'asse delle ascisse i valori presenti nel componente {\color{blue}Date}.
+\begin{enumerate}
+\item Evidenziare il valore minimo, massimo e valore medio.
+\item Permettere la visualizzazione degli apparecchi sul grafico in modo interattivo.
+\end{enumerate}
+
+
+
+
+
+
+\end{document}
--
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