Cito-toets statistics

Paul Cooijmans

Introduction

These are statistics based on the Cito-toets scores reported by test candidates.

Scores on Cito-toets as of 7 July 2022

n: 27
Median: 548.0
Quartile deviation: 3.5
Range: 17
Maximum possible: 550
Minimum possible: 500
Male median: 548.5 (n = 16)
Female median: 548.0 (n = 11)
Resolution: 0.38 (0.54 if half points are frequently given)

534	*
535	*
539	*
540	*
541	*
542	*
543	*
545	*
546	***
547	**
548	**
549	*
550	***********

Scores by males

n = 16

540	*
541	*
545	*
546	***
547	**
550	********

Scores by females

n = 11

534	*
535	*
539	*
542	*
543	*
548	**
549	*
550	***

Correlation of Cito-toets with other mental ability tests

(Test index) Test name	n	r
(72) Qoymans Automatic Test #1	4	0.97
(80) Qoymans Multiple-Choice #4	4	0.88
(87) Cooijmans Intelligence Test - Form 2	4	0.80
(242) Unknown and miscellaneous tests	14	0.64
(220) Cattell Culture Fair	4	0.54
(53) Qoymans Multiple-Choice #3	7	0.52
(209) Drenth number series	4	-0.09
(51) Qoymans Multiple-Choice #1	4	-0.48

Weighted average of correlations: 0.514 (N = 45, weighted sum = 23.14)

Conservatively estimated minimum g loading: 0.72

Ranking in above table is based on the unrounded correlations. All available data is present in this table, no tests are left out except for those with less than 4 score pairs. All known pairs are used, including possible floor/ceiling scores or outliers.

Correlation of Cito-toets with personal details

Personalia	n	r
Educational level	13	0.40
Sex	27	0.32
Observed behaviour	5	0.30
Father's educational level	12	-0.05
Year of birth	23	-0.20
Disorders (own)	13	-0.29
Disorders (parents and siblings)	12	-0.36
Mother's educational level	12	-0.39

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