NPRAFS

NPRA-F (INSC ’17) Statistics

Last Revision : December 28th, 2017.

1. 2nd Norm

Raw Score IQ (sd15) Rarity (1/x) Raw Score IQ (sd15) Rarity (1/x)
9 <130 25 150 2,330
10 130 44 26 152 3,795
11 132 61 27 154 6,284
12 134 85 28 156 10,581
13 135 102 29 158 18,120
14 136 122 30 160 31,560
15 137 147 31 162 55,906
16 138 177 32 164 100,730
17 139 215 33 166 184,606
18 139 215 34 168 344,141
19 140 261 35 170 652,598
20 140 261 36 172 1,258,887
21 142 391 37 175 3,483,046
22 143 482 38 182 43,508,721
23 145 741 39 190 1,009,976,678
24 147 1,157 40 194 5,399,067,340

2. Histogram
histogram2nd

3. Statistical Properties & Correlations with other tests
Calculated mean on reported scores on standard supervised tests is 144.38 sd15 (N=12). Mean raw score of this sample on NPRA-F is 25.8.

Parameter Value Test Score Pairs (n) r
Mean 23.844 Standard* 12 0.816
Median 24 WAIS 5 0.855
Stand. Deviation 7.961 RAPM 4 0.989
Variance 63.376 Jouve** 26 0.803
SEM 1.2 JCTI 9 0.762
Kurtosis -0.586 C-09 5 0.878
Skewness -0.287 C-10 4 0.581
Cronbach’s a 0.917 TLAP-R 3 0.934

* Tests used : WAIS, RAPM, FRT-B, Unknown Mensa Entrance Test.
** Tests used : JCTI, NVCPE-R, CSE, TLAP-R, JCCES, C-09, C-10.

4. Notes

To sum up, NPRA-F shows excellent correlation with standard supervised IQ tests (r=0.816) and reliability (Cronbach’s alpha=0.917), a fact that makes it a reliable tool for estimating one’s intelligence quotient. Interesting is also the high correlation with SLSE I and SLSE II (0.902 (n=11) and 0.972 (n=4), respectively), the two tests that were among the first of their kind. Thus, one could say that a “SLSE III” was born. Next norm will be generated after a total of 75 submissions.

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