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Earn +20 ptsQ: Does t-distribution has a variance that is greater than one?
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Why do you keep the larger of the two variances in the numerator while calculating f distribution variance ratio?
Off the top of my head, a perfect F-ratio would be 1.00 which is never possible. All F-ratios will be greater than one so the numerator has to be greater than denominator.
Why not simply use the mean value of the regressand as its best value?
Variance" is a mesaure of the dispersion of the probability distribution of a random variable. Consider two random variables with the same mean (same aver-age value). If one of them has a distribution with greater variance, then, roughly speaking, the probability that the variable will take on a value far from the mean is greater.
Which is greater 3.309 or 3.42?
The second one.
What is the probability of rolling a number less than 3 and greater than 4 with one roll of a number cube?
The probability is zero. No number can be less than 3 and greater than 4.
Why can't the probability of an event occurring be greater than 1?
If probability becomes greater than one, then the uncertainty coefficient fluctuates and results in a terminal case.
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