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Pooled Standard Deviation: How Do You Calculate It?

When you have the average production of three machines, it is easy to calculate the average or mean production. You just add ...
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Deterministic and Random Single Machine Sequencing with Variance Minimization

We discuss the problem of scheduling several jobs on a single machine so as to minimize the variance of the jobs' completion times. By exploiting the well-known pooled variance formula, we obtain a ...