A scraping away of the skin surface by friction
Bluish tint to the skin caused by deoxygentaed blood
depigmentation of normal skin color or pigment
hyperhidrosisabnormal condition of excess sweat
In statistical interface, a hypothesis is a claim about the value of a population parameter.
For example, we might hypothesize the value of the population mean. A hypothesis that
we plan to test is commonly called a null hypothesis, and is commonly denote