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Probability theory. In probability theory and statistics, a normal distribution or Gaussian distribution is a type of continuous probability distribution for a real-valued random variable. The general form of its probability density function is The parameter is the mean or expectation of the distribution (and also its median and mode), while ...
v. t. e. In probability theory, the expected value (also called expectation, expectancy, expectation operator, mathematical expectation, mean, expectation value, or first moment) is a generalization of the weighted average. Informally, the expected value is the mean of the possible values a random variable can take, weighted by the probability ...
Chebyshev's inequality. In probability theory, Chebyshev's inequality (also called the Bienaymé–Chebyshev inequality) provides an upper bound on the probability of deviation of a random variable (with finite variance) from its mean. More specifically, the probability that a random variable deviates from its mean by more than is at most ...
Pearson's correlation coefficient is the covariance of the two variables divided by the product of their standard deviations. The form of the definition involves a "product moment", that is, the mean (the first moment about the origin) of the product of the mean-adjusted random variables; hence the modifier product-moment in the name.
Ian Somerhalder is feeling very reflective these days. In September, the actor celebrated not only the 15th anniversary of his hit series The Vampire Diaries but also the 20th anniversary of Lost ...
Looks can be deceiving! While Gwen Stefani may have been sporting a cowboy hat in the photo that accompanied her album announcement for Bouquet, she has revealed that she isn't sticking to country ...
6. Garlic Parm Saucy Nuggs. $2.79 for a four-piece. Before we move forward, I need to take a minute to explain Wendy’s new Saucy Nuggs, because they’re a little different than you might expect.
e. The First Amendment (Amendment I) to the United States Constitution prevents the government from making laws respecting an establishment of religion; prohibiting the free exercise of religion; or abridging the freedom of speech, the freedom of the press, the freedom of assembly, or the right to petition the government for redress of grievances.