All Questions
Tagged with statistics iq
12
questions
3
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0
answers
97
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Do different ethnic groups have the same standard deviation of the IQ distribution?
There is a lot of research suggesting that different ethnic groups either within US or worldwide if all plotted together would have distributions of IQ with different averages. The reasons for that ...
- 31
5
votes
2
answers
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Are IQ scores above 200 statistically meaningful?
IQ scores are supposedly put on a normal distribution with a standard deviation of 15.
The population of the world is about 7,674,000,000.
So, if I know my statistics and made no numerical errors, the ...
- 296
0
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0
answers
66
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What is the Reason Behind This Individuals Variability in Raven's 2 Clinical Edition Scores? [duplicate]
The Raven's 2 Clinical Edition developed by Pearson features an item bank comprised of questions numbering in the hundreds.
Because of this each test differs from the other with possible combinations ...
- 21
1
vote
1
answer
295
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Why does IQ have a truncated normal distribution?
I know that the IQ statistic is designed to give it a mean of 100 and that you'll certainly never find someone with an IQ below 1 or above 300, but that tells us very little about the variance or ...
- 63
3
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1
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67
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Correlation used as explanatory device in ''The neuroscience of Intelligence'
I am currently reading Dr. Richard Haier's book The Neuroscience of Intelligence. I have a base knowledge of statistics, but I am confused about the following extract from page 80 (chapter 2.4):
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- 33
3
votes
2
answers
708
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Bounds on skew and kurtosis of IQ
The question of whether IQ is Normally distributed, or instead follows e.g. a Pearson type IV distribution, has been debated since at least the 1910s. The quotient- and deviation-based definitions ...
- 201
2
votes
1
answer
127
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Questions on Interpreting Factor Analysis Results and Scores
I am trying to learn factor analysis and I thought it would be a good idea to try and very poorly "mimic" the computation for IQ scores with a dataset of dummy values as a way to "learn by example".
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- 237
2
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1
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Is writing ability associated with IQ or intelligence?
Is greater ability to write well i.e. analysis of books/literature/research papers associated with higher I.Q. scores?
Statistically speaking, is writing ability normally distributed like I.Q. is?
user19731
4
votes
1
answer
1k
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What does it mean statistically for there to be significant differences in average IQ scores between racial groups?
Charles Murray (in his book, "The Bell Curve") reported that there are real differences between the mean IQ scores of different racial groups. He also points out that IQ variation within said groups ...
- 149
5
votes
1
answer
420
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Does Emotional Intelligence (EQ) demonstrate the Flynn Effect?
The Flynn Effect is a well-known phenomenon whereby Intelligence Quotient (IQ) test scores among the general public seem to rise over time.
Does Emotional Intelligence (EQ) demonstrate the Flynn ...
- 514
1
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1
answer
149
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IQ scores - fixed raw scores vs infinite tails of the underlying normal distribution of standard scores
When taking an IQ test, if a subject responds to all questions correctly, they will achieve the maximum (raw) score, a finite number. Yet, due to the test's normalisation that takes the median raw ...
- 919
3
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Where can I find the norms for Raven's Standard Progressive Matrices? [duplicate]
I've never had my IQ measured before. After some research I decided to take the Raven's Standard Progressive Matrix test. After Googling I found this Wikipedia page. This test was linked on the ...
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