Differences in Median Ultraviolet Light Transmissions of Serial Homeopathic Dilutions of Copper Sulfate, Hypericum perforatum, and Sulfur

Figure 2

Boxplots showing light transmissions of potencies and controls (measurements 1 to 5) of CuSO₄ (a), hypericum (b), S₈ (c). Circles represent outliers (that lie more than one and a half box lengths above or below from the upper or lower quartile, resp.). Every potency level was compared to the combined controls using a Mann-Whitney-U test. Statistically significant results are marked by *. Due to multiple testing, 𝑃 was corrected according to Bonferroni (*𝑃≤0.05/25=0.002).

(a)

(b)

(c)