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A random sample of size 54 from the claw density of Marron and Wand (1992), as used in Figure 10.5 of Loader (1999).
data(claw54)
Numeric vector with length 54.
Loader, C. (1999). Local Regression and Likelihood. Springer, New York.
Marron, J. S. and Wand, M. P. (1992). Exact mean integrated squared error. Annals of Statistics 20, 712-736.