Statistical analysis of cell size distribution in the leaf.

(A and B) Histograms of EPC (A) and PMC (B) sizes. Median and mean values of 69 and 128 cells from more than three independent leaf samples for EPCs and PMCs, respectively, are shown. (C) A quantile normal probability plot for size distribution of EPCs (red) and PMCs (blue). Quantiles of the measured cell size data are plotted as a function of theoretical quantiles of the Gaussian estimate. Individual lines aid visualization. (D) The p-values from Lilliefors tests for the size distributions of EPCs and PMCs. The null hypothesis assuming normality was rejected with higher confidence for EPCs than PMCs.