The Truncated Normal Distribution
between a randomly selected item and the mean. Assuming the mean is known, the variance is de ned as: var(ˆ()) = Z b a (x )2 ˆ(x)dx For the standard normal distribution, we have that var(˚(0;1;)) = 1. Note that the standard deviation of any distribution, represented by std(ˆ()), is simply the square root
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