SEE30N

ISRC2018 (SEE30) Statistics

Last Revision : March 18th, 2018.

1. 2nd Norm

Raw Score IQ (sd15) Raw Score IQ (sd15)
7 <110 19 148
8 114 20 151
9 118 21 154
10 122 22 157
11 126 23 160
12 130 24 162
13 131 25 165
14 133 26 169
15 136 27 172
16 139 28 175
17 142 29 182
18 145 30 190

2. Histogram

2ndHistogram

3. Statistical Properties & Correlations with other tests
Calculated mean on reported scores on standard supervised tests is 143.25 sd15 (N=16). Mean raw score of this sample on ISRC2018 is 18.5. Correlations with supervised psychometric tools, tests by Dr. X. Jouve, as well as some of the oldest high range tests (SLSE and LS series) follow.

Parameter Value Test Score Pairs (n) r
Mean 18.25 Standard* 16 0.775
Median 18 WAIS 6 0.712
Stand. Deviation 4.588 RAPM 4 0.904
Variance 21.051 Jouve** 20 0.712
SEM 0.699 JCTI 7 0.904
Kurtosis -0.35 C-09 5 0.729
Skewness -0.202 TLAP-R 3 0.996
Cronbach’s a 0.899 JCCES 3 0.991
Wai*** 14 0.761
SLSE I 9 0.831
SLSE 48 3 0.965
Lato**** 10 0.818
LS36 7 0.83

* Tests used : WAIS, RAPM, IBF-S, OLSAT, CFIT20R, CCFIT, Unknown Mensa Entrance Test.
** Tests used : JCTI, CSE, TLAP-R, JCCES, C-09, C-10.
*** Tests used : SLSE I, SLSE II, SLSE 48.
**** Tests used : LS36, LS24, LS60.

4. Notes
To sum up, ISRC2018 shows high positive correlation with standard supervised IQ tests (r=0.775) and excellent reliability (Cronbach’s alpha=0.899), a fact that makes it a reliable tool for estimating one’s intelligence quotient. It’s also quite clear, yet still preliminary as an observation, that there is a stronger correlation with spatial tests, either supervised or not – something that was expected. Next norm will be generated after a total of 100 submissions.

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