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One may also round half toward zero (or round half away from infinity) as opposed to the conventional round half away from zero. If the fractional part of x is exactly 0.5, then y = x − 0.5 if x is positive, and y = x + 0.5 if x is negative.
Round-to-nearest: () is set to the nearest floating-point number to . When there is a tie, the floating-point number whose last stored digit is even (also, the last digit, in binary form, is equal to 0) is used.
The quadratic scoring rule is a strictly proper scoring rule (,) = = =where is the probability assigned to the correct answer and is the number of classes.. The Brier score, originally proposed by Glenn W. Brier in 1950, [4] can be obtained by an affine transform from the quadratic scoring rule.
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Let these events be called Event 2, Event 3, and so on. Event 1 is the event of person 1 having a birthday, which occurs with probability 1. This conjunction of events may be computed using conditional probability: the probability of Event 2 is 364 / 365 , as person 2 may have any birthday other than the birthday of person 1.
This so-called range rule is useful in sample size estimation, as the range of possible values is easier to estimate than the standard deviation. Other divisors K ( N ) of the range such that s ≈ R / K ( N ) are available for other values of N and for non-normal distributions.
The Nokia 3000 series are mostly mid-range phones targeted towards the youth market. Many of these models included visually attractive designs to appeal to the younger demographic, unlike the 6000-series which were more conservatively styled to appeal to business users, and the 7000-series which targeted the fashion-conscious.
The cumulative distribution function of a random variable with regard to a probability distribution is defined as = (). The cumulative distribution function of any real-valued random variable has the properties: is non-decreasing;