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15
The average IQ in Thailand is 89
I had to ask ChatGPT how to determine the percent of a normal distribution based on a standard deviation of 15. That was the answer it gave and showed the formulas. Why doesn't that apply to IQ? Here's is the output: To find the percentage of the population at or above 100 on a normal distribution with: Mean (μ) = 89 Standard deviation (σ) = 15 We are looking for the probability that a value is ≥ 100 Step 1: Convert to Z-score Z = \frac{X - \mu}{\sigma} = \frac{100 - 89}{15} = \frac{11}{15} \approx 0.733 Step 2: Use the Z-score to find the percentile From the Z-table or using a standard normal distribution calculator: The area to the left of Z = 0.733 is approximately 0.7673 Step 3: Subtract from 1 to get the upper tail P(X \geq 100) = 1 - 0.7673 = 0.2327 ✅ Final Answer: Approximately 23.27% of the population has an IQ at or above 100 when the distribution has a mean of 89 and standard deviation of 15. -
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Report Thailand Tightens Rules for Foreign Drivers: Tests Now Mandatory
Ah fair point. I just saw my quote in there and didn't click "expand" so it did look like you were replying to me. -
10
Salted to Death on Thai Food - Starved of it on Western...
A sensible answer. But 10 or so? I hope not. But who knows? -
190
Krungsri online banking discontinued from 1 October 2025
Foreign cards often use only 4 digits and work very well in Thai ATMs -
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US inflation
Price drops is deflation. Stagflation is rising prices and rising unemployment. Normally increased gov spending rises inflation and reduces unemployment. Cuts in spending normally lead to falling inflation and higher unemployment. -
15
The average IQ in Thailand is 89
Not really. It works a bit different: IQ tests are scored relative to a set of people who are supposed to statistically represent the nation where the test will be used. The test is designed to produce a Gaussian distribution with a standard deviation of 15. The mean is defined as IQ 100. Half of the normal people (those not suffering from mental diseases) have IQs above 100 and the other half are below 100. IQ = (15 x z-score) + 100, where the z-score is relative to age peers. Each nation does this, so the tests from a dull nation will still show the average score as 100 and bright nations will also show the mean as 100. In order to compare nations, all test scores must be adjusted to one standard. The one used is the Greenwich IQ Standard (white British). After the conversion, we can compare all nations. Doing that shows the mean IQ for the world is 84. So, on the basis of the full world population, a person with a Greenwich IQ Standard IQ of 100 would be 16 IQ points above the world mean.
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