Practice Quiz

Lean Bronze

Category - Continuous Improvement

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Which design of experiments principle is used to remove systematic error?
  1. Replication, in which the number of tests should equal the number of replications.
  2. Efficiency, which is the lowest possible variance from any estimator divided by the expected variance of the selected estimator.
  3. Balance, which is evenly distributing both the quantity and variety of work across available work time, avoiding overburden and underuse of resources.
  4. The power of a hypothesis test to measure of the probability of rejecting the null hypothesis when it is false.
Explanation
Answer: A - When using the design of experiments, replication is used to remove systematic error. The number of tests performed should be equal the number of replications. The design of experiments is a systematic series of tests used to determine relationships of x and y variables that affect a process and response. The results of the experiment are analyzed to find the regression equation that relates the factors to the response.
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