Fig. 1From: Distribution characteristics of salivary cortisol measurements in a healthy young male populationFrequency distributions of the raw and numerically transformed salivary cortisol levels of healthy young male adults. The raw data (COR-raw) exhibit a right-skewed distribution, whereas the logarithmic data (COR-log) exhibit a left-skewed distribution. In contrast, the square root transformation (COR-sqrt) generated a nearly symmetrical distributionBack to article page