## SRA-F Statistics

##### Last Revision : November 1st, 2017.

**1. 3rd Norm**

Raw Score |
IQ (sd15) |
Rarity (1/x) |
Raw Score |
IQ (sd15) |
Rarity (1/x) |

6 |
<120 | – | 15 |
145 | 741 |

7 |
120 | 11 | 16 |
150 | 2,330 |

8 |
125 | 21 | 17 |
153 | 4,873 |

9 |
128 | 32 | 18 |
158 | 18,120 |

10 |
131 | 52 | 19 |
161 | 41,916 |

11 |
133 | 72 | 20 |
166 | 184,606 |

12 |
135 | 102 | 21 |
172 | 1,258,887 |

13 |
138 | 177 | 22 |
175 | 3,483,046 |

14 |
142 | 391 | 23 |
>=178 | 10,016,587 |

**2. Histogram**

**3. Statistical Properties & Correlations with other tests**

*Calculated mean on reported scores on standard supervised tests is 140,583 sd15 (N=13). Mean raw score of this sample on SRA-F is 13,73.*

Parameter |
Value |
Test |
Score Pairs (n) |
r |

Mean |
13,32 | WAIS |
6 | 0,847 |

Median |
13 | |||

Stand. Deviation |
3,652 | Standard* |
13 | 0,834 |

Variance |
13,338 | |||

SEM |
0,424 | Jouve** |
14 | 0,714 |

Kurtosis |
-0,515 | |||

Skewness |
-0,116 | RAPM |
4 | 0,635 |

Cronbach’s a |
0,889 |

* Tests used : WAIS, RAPM, FRT-B, CFT20R.

** Tests used : JCTI, CSE, TLAP-R, JCCES.

**4. Notes**

As seen above, SRA-F shows both high correlation with standard supervised IQ tests and high reliability. This test proved to be harder than expected, probably among the hardest online (LS24 is probably one of them); in fact, simple ideas are hidden in its items. The gap between top score (21) and total number of items (32) is relatively big. Next norm, at 100 candidates, will surely be of interest.

Advertisements