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Excel maintains 15 figures in its numbers, but they are not always accurate; mathematically, the bottom line should be the same as the top line, in 'fp-math' the step '1 + 1/9000' leads to a rounding up as the first bit of the 14 bit tail '10111000110010' of the mantissa falling off the table when adding 1 is a '1', this up-rounding is not undone when subtracting the 1 again, since there is no ...
The batch total is entered and the computer checks that the total is correct, e.g., add the 'Total Cost' field of a number of transactions together. Cardinality check Checks that record has a valid number of related records. For example, if a contact record is classified as "customer" then it must have at least one associated order (cardinality ...
When k = n (the number of observations), k-fold cross-validation is equivalent to leave-one-out cross-validation. [16] In stratified k-fold cross-validation, the partitions are selected so that the mean response value is approximately equal in all the partitions. In the case of binary classification, this means that each partition contains ...
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In other words, the two variables are not independent. If there is no contingency, it is said that the two variables are independent. The example above is the simplest kind of contingency table, a table in which each variable has only two levels; this is called a 2 × 2 contingency table. In principle, any number of rows and columns may be used.
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The estimate of gamma, G, depends on two quantities: N s, the number of pairs of cases ranked in the same order on both variables (number of concordant pairs), N d, the number of pairs of cases ranked in reversed order on both variables (number of reversed pairs), where "ties" (cases where either of the two variables in the pair are equal) are ...