Question

Robust design is to do with reducing the variation in performance.this variation can be measured as: a) standard deviation b) Absolute deviation c) Neither of a or b d) either of a or b

Answer 1

The correct answer is option 1 - Standard Deviation.

Standard deviation measures the variation in performance.

It is a statistical tool and calculates the sum of mean related variations in a data set.

Standard deviation can be calculated on sample data or the complete size of the data set.

It is the most effective for recording variations in performance.

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Answer 2

This variation can be measured as standard deviation.

Option: (a)

Explanation:  

• This concept was given by Taguchi a famous Japanese Technology head in the year 1992.  

• Robust design is a type of study in which the variation in the outcome is decreased however the variation in the determinants or the data which is input in the system is not changed.  

• As a result only the input is changed but the output remains the same. This is in general terms a type of standard deviation of data.