\contentsline {section}{\numberline {1}Overview of this and related documents}{2}{section.1}
\contentsline {section}{\numberline {2}Install R and relevant packages}{4}{section.2}
\contentsline {subsection}{\numberline {2.1}Install R for the first time}{4}{subsection.2.1}
\contentsline {subsubsection}{\numberline {2.1.1}Install R }{5}{subsubsection.2.1.1}
\contentsline {subsubsection}{\numberline {2.1.2}Install relevant packages}{10}{subsubsection.2.1.2}
\contentsline {paragraph}{Install the minimum set}{10}{section*.2}
\contentsline {paragraph}{Install the {\textit {sem}} package as well}{10}{section*.3}
\contentsline {paragraph}{Install all the psychometric packages from the ``psychometrics'' task view.}{11}{section*.4}
\contentsline {section}{\numberline {3}Read in the data}{11}{section.3}
\contentsline {subsection}{\numberline {3.1}Copy the data from another program using the copy and paste commands of your operating system}{11}{subsection.3.1}
\contentsline {subsection}{\numberline {3.2}Import from an SPSS or SAS file}{12}{subsection.3.2}
\contentsline {section}{\numberline {4}Some simple descriptive statistics before you start}{13}{section.4}
\contentsline {section}{\numberline {5}Using the {\texttt {omega}} function to find $\omega $}{14}{section.5}
\contentsline {subsection}{\numberline {5.1}Background on the $\omega $ statistics}{14}{subsection.5.1}
\contentsline {subsection}{\numberline {5.2}Using the {\texttt {omega}} function}{16}{subsection.5.2}
\contentsline {subsection}{\numberline {5.3}Estimating $\omega _h$ using Confirmatory Factor Analysis}{17}{subsection.5.3}