Products of means versus products of ests is the application of simple rule 3, this application does not replace the calculator, however it facilitates the calculations; for example.
-If 1 kg of beans is 50$
-So 5kg will be? The fourth number is what will appear when the calculation is applied.
-If 1 kg of beans is 50$
-So 5kg will be? The fourth number is what will appear when the calculation is applied.
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