To find the absolute standard deviation in a product or a quotient, first find the relative standard deviation in the result and then multiply it by the result. [Pg.129]

In this situation, the standard deviations of two of the numbers in the calculation are larger than the result itself. Evidently, we need a different approach for multiplication and division. As shown in Table 6-4, the relative standard deviation of a product or quotient is determined by the relative standard deviations of the numbers forming the computed result. For example, in the case of [Pg.129]

The F test tells us whether two standard deviations are "significantly different from each other. F is the quotient of the squares of the standard deviations [Pg.63]

Thus, for products and quotients, the relative standard deviation of the result is equal to the sum of the squares of the relative standard deviation of the number making up the product or quotient. [Pg.1083]

The mean of these quotients Az2rei should be situated near zero and their standard deviation near unity, i.e. it should be a standardized normal distribution if the kriging estimation is distortion-free. [Pg.120]

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