VGT-FS

VGT-F Statistics

Last Revision : December 21st, 2017.

1. 2nd Norm

Raw Score IQ (sd15) Rarity (1/x) Raw Score IQ (sd15) Rarity (1/x)
21 <=124 31 151 2,968
22 124 18 32 154 6,284
23 128 32 33 157 13,817
24 131 52 34 159 23,863
25 133 72 35 163 74,883
26 136 122 36 167 251,515
27 139 215 37 172 1,258,887
28 142 391 38 177 7,013,455
29 145 741 39 183 63,492,548
30 148 1,455 40 190 1,009,976,678

2. Histogram

VGT2ndnorm

3. Statistical Properties & Correlations with other tests
Calculated mean on reported scores on standard supervised tests is 142.125 sd15 (N=17). Mean raw score of this sample on VGT-F is 30.31.

Parameter Value Test Score Pairs (n) r
Mean 30.489 Standard* 17 0.807
Median 31  WAIS  6 0.8
Stand. Deviation 3.78 RAPM 5 0.961
Variance 14.294  Jouve**  19  0.826
SEM 0.569 JCTI 8 0.732
Kurtosis 0.964  C09  5 0.943
Skewness -0.925
Cronbach’s a 0.93  –

* Tests used : WAIS, RAPM, MAT, IST70, SBIS, Cattell III-B, ACT, Unknown Mensa Entrance Test.
** Tests used : JCTI, NVCPE-R, CSE, TLAP-R, JCCES, C09, C10.

4. Notes
To sum up, VGT-F continues to show high positive correlation with standard supervised IQ tests (r=0.807) and excellent reliability (Cronbach’s alpha=0.93), a fact that makes it a reliable tool for estimating one’s intelligence quotient. Next norm will be generated after a total of 75 submissions.

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