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Statistics and Figures

Since traditional psychometric methods for reliability can not be used to calculate specific parts in a test, we use so called "New Quality Analysis" (simlilar to the methods used by Dr. Ivan Ivec) to be able to determine the quality of a the intervals listed below. A New Quality figure is about 10-15% lower than the corresponding Cronbach's Alpha.

For instance the TERO41 test has a New Quality level at 0.89 over IQ 160, This would correspond to a Cronbach's Alpha very close to 1.0 which is as good as you can get. But even levels from about 0.6 are fully acceptable.

To measure the "Real IQ" for people with a personal portal at this site, we currently use a method to calculate the mean of rarity for all tests, this includes a method to compensate for low and failed scores.


Statistics - Under Construction

IQ Test
Cronbach's Alpha
Total Quality
Quality 130-150
Quality 150-170
Quality >160
Norm and Distribution Data
TERO41
0.88
0.83
0.83
0.80
0.78
Skewness:
Kurtosis:
SD average:
LABCUB
0.79
0.81
0.81
0.77
0.76
Skewness:
Kurtosis:
SD average:
momentum
0.74
0.72
0.72
0.69
0.67
Skewness:
Kurtosis:
SD average:
RADIUS
0.78
0.74
0.74
0.70
0.68
Skewness:
Kurtosis:
SD average:
Hrrt38
0.83
0.81
0.80
0.76
0.75
Skewness:
Kurtosis:
SD average:
OCHE30, N=113
0.66
0.71
0.72
0.68
0.64
Skewness:
Kurtosis:
SD average:
Logica Stella N=445
0.88
0.78
0.79
0.75
0.73
Skewness: -0.13597
Kurtosis: -0.439
SD average: 5.31

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