drop1.item.scale: Iteratively drop items from a scale and recompute scale...

In rwash/surveys: Functions to assist with loading and analyzing surveys

Iteratively drop items from a scale and recompute scale measures

Description

This allows you to take an item.scale and iteratively drop items. It recalculates the scale and also calculates new Cronbach's alpha for each new scale.

Usage

## S3 method for class 'item.scale'
drop1(x, scope)

Arguments

x	An item.scale
scope	A character vector containing the list of items that will be dropped.

Details

This is useful during exploratory analysis in determining whether all items are needed in a scale. Each item in scope will be dropped separately in the order they are given and a new scale/alpha will be computed.

If scope is omitted, all items in the scale will be iteratively dropped.

Value

An n by 3 matrix where n is the number of items to be dropped. Includes the mean, standard deviation, and alpha of each new scale as items are dropped.

rwash/surveys documentation built on Sept. 18, 2023, 11:31 p.m.