.cronbach

<code>.cronbach</code> is the function used by the <code><a href="/link/boot?package=quest&version=0.2.0" data-mini-rdoc="quest::boot">boot</a></code> function
within the <code>cronbach</code> function. It is primarily created to increase the
computational efficiency of bootstrap confidence intervals within the
<code>cronbach</code> function by doing only the minimal computations needed to
compute cronbach's alpha.

Offers a suite of functions to prepare questionnaire data for analysis (perhaps other types of data as well). By data preparation, I mean data analytic tasks to get your raw data ready for statistical modeling (e.g., regression). There are functions to investigate missing data, reshape data, validate responses, recode variables, score questionnaires, center variables, aggregate by groups, shift scores (i.e., leads or lags), etc. It provides functions for both single level and multilevel (i.e., grouped) data. With a few exceptions (e.g., ncases()), functions without an "s" at the end of their primary word (e.g., center_by()) act on atomic vectors, while functions with an "s" at the end of their primary word (e.g., centers_by()) act on multiple columns of a data.frame.

David Disabato

quest

Prepare Questionnaire Data for Analysis

.cronbach function

<dl><dt>dat</dt>
<dd>data.frame with only the items you wish to include in the cronbach's
alpha computation and no other variables.</dd>
<dt>i</dt>
<dd>integer vector of length = <code>nrow(dat)</code> specifying which rows
should be included in the computation. When used by the <code><a href="/link/boot%3A%3Aboot?package=quest&version=0.2.0" data-mini-rdoc="quest::boot::boot">boot::boot</a></code> function
this argument will change with every new bootstrapped resample.</dd>
<dt>use</dt>
<dd>character vector of length 1 specifying how missing data should be
handled when computing covariances. See <code>cov</code> for details.</dd></dl>

Arguments

<code>.cronbach</code> is the function used by the <code><a href='https://rdrr.io/pkg/boot/man/boot.html'>boot</a></code> function
within the <code>cronbach</code> function. It is primarily created to increase the
computational efficiency of bootstrap confidence intervals within the
<code>cronbach</code> function by doing only the minimal computations needed to
compute cronbach's alpha.

Bootstrap Function for cronbach() Function — .cronbach

<dl>

<dt>dat</dt>
<dd>data.frame with only the items you wish to include in the cronbach's
alpha computation and no other variables.</dd>


<dt>i</dt>
<dd>integer vector of length = <code>nrow(dat)</code> specifying which rows
should be included in the computation. When used by the <code><a href='https://rdrr.io/pkg/boot/man/boot.html'>boot::boot</a></code> function
this argument will change with every new bootstrapped resample.</dd>


<dt>use</dt>
<dd>character vector of length 1 specifying how missing data should be
handled when computing covariances. See <code>cov</code> for details.</dd>

</dl>

.cronbach: Bootstrap Function for `cronbach()` Function

Description

Usage

Value

Arguments

Examples