Author: Leigh Patterson
Date: 2024-02-18

# Item Review Sheets produced using conquestr

#### Leigh Patterson

#### 2024-02-18

A number of libraries are required. This is becasue we will format some objects with our own R markdown.

    ##
    ## Attaching package: 'kableExtra'

    ## The following object is masked from 'package:dplyr':
    ##
    ##     group_rows

## Item Review Sheets produced using RMarkdown

This is an example of implementation of Item Review Sheets using RMarkdown and conquestr. We will use the default system file, analysis, and plots from the conquestr library. First we can read in the system file (output by ACER ConQuest). Item analysis (itanal) and iteration history are stored in the system file.

    ## no system file provided, loading the example system file instead

Output from plot files are stored separately in Rout files.

    ## no rout file provided, loading the example rout file instead

There are also helper functions to plot iteration history and Rout files.

## Test Summary Information

Summary Statistics:

| Percent Missing | N | Mean | SD | Variance | Skew | Kurtosis | Standard error of mean | Standard error of measurement | Alpha
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
| 0 | 999 | 8.44 | 2.4 | 5.78 | -0.6 | -0.2 | 0.08 | 1.43 | 0.64

Visual summary of convergence

Iteration history of item parameters.

## Item 1 Summary

Item 1 Statistics:

x
item:1 (item one)

Category | Score | Count | Percent | Pt Bis | Pt Bis t stat. | Pt Bis sig. | Ability mean (D1) | Ability SD (D1)
--- | --- | --- | --- | --- | --- | --- | --- | ---
M | 0 | 6 | 0.60 | -0.11 | -3.40 | 0.00 | -0.98 | 1.15
a | 1 | 644 | 64.46 | 0.46 | 16.14 | 0.00 | 0.32 | 0.82
b | 0 | 23 | 2.30 | -0.08 | -2.68 | 0.01 | -0.51 | 0.68
c | 0 | 47 | 4.70 | -0.20 | -6.40 | 0.00 | -0.89 | 0.89
d | 0 | 104 | 10.41 | -0.24 | -7.76 | 0.00 | -0.61 | 0.74
e | 0 | 175 | 17.52 | -0.22 | -6.97 | 0.00 | -0.43 | 0.80

| x
--- | ---
item-total | 0.61
item-rest | 0.46
obs_mean | 0.64
exp_mean | 0.65
adj_mean | 0.65

Item 1 ICC:

Inserting red text for demo purposes.