Near-Net Shape Manufacturing of Miniature Spur Gears by Wire Spark Erosion Machining by Kapil Gupta & Neelesh Kumar Jain

Author:Kapil Gupta & Neelesh Kumar Jain
Language: eng
Format: epub
Publisher: Springer Singapore, Singapore

(3.9)

Here, v errors is number of degress of freedom associated with the errors.

7. F -ratio: Fisher’s ratio for p parameter is calculated using

(3.10)

Here, F p is the value of the F-ratio for the parameter p; and MSS e is the value of the F-ratio for the error.

8. Comparison of F -ratios: The value of F-ratio calculated for each parameter is compared with the value available in the standard tables corresponding to the DOF of that parameter for different confidence levels. If the calculated value of the F-ratio is greater than the tabulated value of the F-ratio at any confidence level, then the parameter is significant at that confidence level otherwise it is insignificant.

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