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The central limit theorem: the arithmetic mean of a sufficient number of independent random variables with means and variances will be a normal random variable. It's just that lots of natural phenomena are like this, or appear to be sufficiently like this. Please see the wikipedia article for more details.
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Earn +20 ptsQ: What is the basis for the normal curve?
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Is the standard normal curve non symmetrical?
The standard normal curve is symmetrical.
What are the properties of a standard normal curve?
It is a normal curve with mean = 0 and variance = 1.
What is the area under the standard normal curve?
the standard normal curve 2
Can you compare and contrast the skewness and normal curve?
Answer this question...similarities and differences between normal curve and skewness
Why if a probability distribution curve is bell shaped why is this a normal distribution?
A bell shaped probability distribution curve is NOT necessarily a normal distribution.
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