Percentage of silica in chondrite meteors
This dataset contains the percentage silica (in %) in 22 chondrite meteors.
data(chondrite)
chondrite and chondritegg include the data provided in Good and Gaskins (1980). In chondrite, the typo in the 9th observation was corrected while chondritegg includes the original dataset. In chondritel is included the scaled data used by Leonard (1978).
This is a classic example for determining the number of modes.
Obtained from the Table 2 of Good and Gaskins (1980).
Good, I. J. and Gaskins, R. A. (1980). Density estimation and bump-hunting by the penalized likelihood method exemplified by scattering and meteorite data. Journal of the American Statistical Association, 75, 42–56.
Leonard, T. (1978). Density estimation, stochastic processes and prior information. Journal of the Royal Statistical Society. Series B (Methodological), 40, 113–146.
data("chondrite")
# SiZer between the critical bandwidths for one and six modes
sizer(chondrite,cbw1=1,cbw2=6)Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.