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Lowest standard deviation of measurementsAs the Quality Control Manager of a chemical company, you are asked to decide between several process methods that are supposed to uniformly mix 37.4 milligrams into a chemical solution. The resulting solutions from each process are sample tested for uniformity. The test samples yielded the following results of percentage powder mixed in the solution:
Method A: 0.13%, 0.21%, 0.009%, 0.014%Method B: 0.10%, 0.006%, 0.015%, 0.11%, 0.16%Method C: 0.006%, 0.09%, 0.07%Method D: 0.18%, 0.16%, 0.19%, 0.17%
Which method would be the best choice to provide a uniform mixture??? (Hint: The best selection would be that resulting in the lowest standard deviation of measurementsMethod AMethod BMethod CMethod D
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