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This function uses Daniel's Method to find an outlier in an unreplicated \(2^{(k-p)}\) design.
Gaptest(DesY)
input this is a data frame containing an unreplicated \(2^{(k-p)}\) design. The last variable in the data frame should be the numeric response.
John Lawson
Box, G.E.P. (1991) "George's column: Finding bad values in factorial designs", Quality Engineering, 3, 249-254.