VRAF-S

VRA-F Statistics

Last Revision : October 31st, 2017.

1. 2nd Norm

Raw Score IQ (sd15) Rarity (1/x) Raw Score IQ (sd15) Rarity (1/x)
25 <=115 6.3 38 143 482
26 117 8 39 146 924
27 119 10 40 149 1,838
28 121 12 41 153 4,873
29 123 16 42 155 8,137
30 125 21 43 158 18,120
31 127 28 44 160 31,560
32 130 44 45 164 100,730
33 131 52 46 169 472,893
34 133 72 47 173 1,759,737
35 135 102 48 177 7,013,455
36 138 177 49 181 29,943,596
37 140 261 50 190 1,009,976,678

2. Histogram
2ndNormHistogram

3. Statistical Properties & Correlations with other tests
Calculated mean on reported scores on standard supervised tests is 141.75 sd15 (N=23). Mean raw score of this sample on VRA-F is 37.304.

Parameter Value Test Score Pairs (n) r
Mean 37.431 Standard* 23 0.868
Median 39  WAIS 9  0.838
Stand. Deviation 4.599 RAPM 7 0.808
Variance 21.154  Jouve** 17 0.821
SEM 0.701 JCTI 7 0.732
Kurtosis -0.728  C-09 3 0.967
Skewness -0.273
Cronbach’s a 0.951  –

* Tests used : WAIS, RAPM, FRT-B, MAT, Wonderlic, IST70, ACT, WPCT, PCAT.
** Tests used : JCTI, NVCPE-R, CSE, TLAP-R, JCCES, C-09.

4. Notes

To sum up, VRA-F shows excellent correlation with standard supervised IQ tests (r=0.868) and reliability (Cronbach’s alpha=0.951), a fact that makes it a reliable tool for estimating one’s intelligence quotient. Next norm will be generated after 75 submissions.

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