VRAF-S

VRA Form I Statistics

Last Revision : May 6th, 2018.

1. 3rd Norm

Raw Score IQ (sd15) Raw Score IQ (sd15)
11 96 21 139
12 100 22 144
13 105 23 148
14 109 24 152
15 113 25 157
16 118 26 161
17 122 27 165
18 126 28 170
19 131 29 174
20 135 30 178

2. Histogram

A) Grouped scores

3rdnormgroup

B) Independent scores

3rdnormfull

3. Statistical Properties & Correlations with other tests
Calculated mean on reported scores on standard supervised tests is 139.54 sd15 (N=37). Mean raw score of this sample on VRA-F is 20.78.

Parameter Value Test Score Pairs (n) r
Mean 21.342 Standard* 37 0.772
Median 22  WAIS 11 0.826
Stand. Deviation 3.459 RAPM 10 0.672
Variance 11.961 CCFIT III 3 0
SEM 0.397  Jouve** 25 0.781
Kurtosis 0.06  JCTI 8 0.811
Skewness -0.291 C-09 6 0.892
Cronbach’s a 0.9  JCCES 3 0.5

* Tests used : WAIS, RAPM, FRT-B, MAT, Wonderlic, IST70, ACT, OLSAT, TOGRA, CCFIT III, WPCT, PCAT, Unknown Mensa Entrance Tests.
** Tests used : JCTI, NVCPE-R, CSE, TLAP-R, JCCES, C-09, C-10, Encephalist.

4. Notes
To sum up, VRA-F shows excellent correlation with standard supervised IQ tests (r=0.772) and reliability (Cronbach’s alpha=0.9), a fact that makes it a reliable tool for estimating one’s intelligence quotient. Next norm will be generated after 100 submissions.

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