A Statistical Study of Two Variables in the Sequoias-Pollen Grain Size and Cotyledon Number

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Abstract
Each variable overlaps slightly in the 2 genera but when treated statistically each shows a significant difference. Mean diam. of pollen of Sequoiadendron is 22.47 [plus or minus] 0.05 ([sigma]= 1.47 [plus or minus] 0.05), Sequoia 32.85 [plus or minus] 0.11 (([sigma] = 2.60 [plus or minus] 0.08) [mu]; means of cotyledon numbers 3.69 [plus or minus] 0.03 ([sigma]=.52 [plus or minus] 0.02) and 2.09 [plus or minus] 0.02 ([sigma]=.29 [plus or minus]: 0.01) respectively. Differences based on standard deviations in the 2 categories are 12 and 10 times the standard error of difference.

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