Question: 3.46 Are the data Normal? Soil penetrability. Table 2.5 (page 48) gives data on the penetrability of soil at each of three levels of compression.

3.46 Are the data Normal? Soil penetrability. Table 2.5

(page 48) gives data on the penetrability of soil at each of three levels of compression. We might expect the penetrability of specimens of the same soil at the same level of compression to follow a Normal distribution. Make stemplots of the data for loose and for intermediate compression. Does either sam ple seem roughly Normal? Does either appear distinctly non-

Normal? If so, what kind of departure from Normality does your stemplot show?

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