Question: explain the difference between a training data set and a vlaidation data set. Why are these data sets used routinely with data mining techniques in

explain the difference between a training data set and a vlaidation data set. Why are these data sets used routinely with data mining techniques in the XLMiner program and not used in the ForecastX program? Is there, in fact, a similar technique presented in a previous chapter that is much the same as partitionng a data set?

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