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author | Christopher Baines <mail@cbaines.net> | 2014-04-01 19:10:41 +0100 |
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committer | Christopher Baines <mail@cbaines.net> | 2014-04-07 15:10:02 +0100 |
commit | 723b6ded0066651ac8521ce1320371c8430b1434 (patch) | |
tree | c53525348a43d840740971ed01c4b48c0a0fe291 /dataprocessing.tex | |
download | mathematical-worksheets-master.tar mathematical-worksheets-master.tar.gz |
Diffstat (limited to 'dataprocessing.tex')
-rw-r--r-- | dataprocessing.tex | 144 |
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diff --git a/dataprocessing.tex b/dataprocessing.tex new file mode 100644 index 0000000..9b946cc --- /dev/null +++ b/dataprocessing.tex @@ -0,0 +1,144 @@ +\documentclass[12pt,a4paper,twocolumn,landscape]{exam} + +\usepackage{xparse} +\usepackage{tikz} + \usetikzlibrary{arrows,calc,fit} +\usepackage{mathtools} +\usepackage{fullpage} +\usepackage{todonotes} +\usepackage{float} +\usepackage[compact,explicit]{titlesec}% http://ctan.org/pkg/titlesec +\usepackage[utf8]{inputenc} +\usepackage{titling} +\usepackage{pgfplots} +\usepackage{wrapfig} +\usepackage{boxedminipage} +\usepackage{parskip} % Don't indent paragraphs + +\usepackage{fib} +\usepackage{common} + +\newcommand{\slice}[4]{ + \pgfmathparse{0.5*#1+0.5*#2} + \let\midangle\pgfmathresult + + % slice + \draw[thick,fill=black!10] (0,0) -- (#1:1) arc (#1:#2:1) -- cycle; + + % outer label + \node[label=\midangle:#4] at (\midangle:1) {}; + + % inner label + \pgfmathparse{min((#2-#1-10)/110*(-0.3),0)} + \let\temp\pgfmathresult + \pgfmathparse{max(\temp,-0.5) + 0.8} + \let\innerpos\pgfmathresult + \node at (\midangle:\innerpos) {#3}; +} + +\pagestyle{headandfoot} + +\firstpageheadrule +\firstpageheader{Ratios} + {Level 5-6} + {\today} + +\runningheadrule +\runningheader{Ratios} + {Ratios, Page \thepage\ of \numpages} + {\today} + +\firstpagefooter{}{}{} +\runningfooter{}{}{} + +\begin{document} +\section*{Data Processing - Level 5-6} + +\begin{wrapfigure}{R}{0.25\linewidth} + \centering + \begin{boxedminipage}{\linewidth} + Keywords: + \begin{itemize} + \item Chart + \item Graph + \item Data + \item Stem + \end{itemize} + \end{boxedminipage} +\end{wrapfigure} + +Data can be represented in many ways, one useful way is to represent it as a +graph or chart. + +\subsection*{Stem and Leaf Diagrams} + +Stem and leaf diagrams are useful for displaying small to medium amounts of +numerical data. + +For example, in the stem and leaf diagram below, you can see some test +results. By looking at the length of the row of numbers, you can tell how many +results fall in to each range. + +A very important part of the stem and leaf diagram is the key, this tells you +how to interpret the data in the diagram. + +\begin{table}[htbp] + \centering + \caption{Stem Plot of test results Key: $1 | 1= 11$} + \begin{tabular}{r|*{9}{l}} + Stem & \multicolumn{9}{l}{Leaf} \\ + \hline + 1 & 1 & & & & & & & & \\ + 2 & 0 & 3 & & & & & & & \\ + 3 & 5 & 6 & 6 & 6 & 7 & 7 & 7 & 8 & 9 \\ + 4 & 5 & 7 & 7 & 8 & & & & & \\ + \end{tabular} + \label{tab:addlabel} +\end{table} + +\subsection*{Bar Charts} + +Bar charts are another way of representing data, here the chart below +represents the number of different colour cars that passed a point on a road +over a hour. + +\begin{figure}[H] + \centering + \begin{tikzpicture} + \begin{axis}[ + symbolic x coords={Red, Green, Blue}, + xtick=data + ] + \addplot[ybar,fill=black!10] coordinates { + (Red, 42) + (Green, 50) + (Blue, 80) + }; + \end{axis} + \end{tikzpicture} +\end{figure} + +\subsection*{Pie Charts} + +\begin{figure}[H] + \centering + \begin{tikzpicture}[scale=3] + \newcounter{a} + \newcounter{b} + \foreach \p/\t in {20/type A, 4/type B, 11/type C, + 49/type D, 16/other} + { + \setcounter{a}{\value{b}} + \addtocounter{b}{\p} + \slice{\thea/100*360} + {\theb/100*360} + {\p\%}{\t} + } + \end{tikzpicture} +\end{figure} + +\subsection*{Questions} + +TODO + +\end{document} |