NPRA36-S

NPRA36 Statistics

Last Revision : May 28th, 2017.

1. 1st Norm

Raw Score IQ (sd15) Rarity (1/x) Raw Score IQ (sd15) Rarity (1/x)
9 <=128  32 23 152  3,795
10 130 44 24 154 6,284
11 132 61 25 156 10,581
12 133 72 26 157 13,817
13 134 85 27 158 18,120
14 135 102 28 160 31,560
15 136 122 29 162 55,906
16 137 147 30 164 100,730
17 139 215 31 166  184,606
18 142  391 32 168 344,141
19 144 596 33 170  652,598
20 146 924 34 172 1,258,887
21 148  1,455 35 180 20,696,863
22 150 2,330 36 190 1,009,976,678

2. Histogram
1stnormgraph

3. Statistical Properties & Correlations with other tests
Calculated mean on reported scores on standard supervised tests is 137,57 sd15 (N=8). Mean raw score of this sample on NPRA36 is 16.

Parameter Value Test Score Pairs (n) r
Mean 20.823 Standard* 8 0.842
Median 21
Stand. Deviation 7.039 WAIS 4 0.985
Variance 49.557
SEM 1.225 Jouve** 10 0.903
Kurtosis 0.056
Skewness -0.464 JCTI 3 0,999
Cronbach’s a 0.951

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

4. Notes
To sum up, NPRA36 shows excellent (still, preliminary) correlation with standard supervised IQ tests (r=0.842) and reliability (Cronbach’s alpha=0.951), a fact that makes it a reliable tool for estimating one’s intelligence quotient. In addition, due its high difficulty (a raw score of 11/36 is theoretically enough for joining Mensa), test’s structure provides enough space for thorough IQ estimation, without leaving large gaps within the norm. Next norm (2nd) will be generated after a total of 45 submissions.

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