1 Colitis is inflammation of the inner lining of the colon. 2  It may cause abdominal pain and diarrhea with or without blood. 3  Fever may be present. 4  There are numerous causes of colitis including infection, inflammatory bowel disease, ischemic, and microscopic colitis.olitis facts. 1  Colitis is inflammation of the inner lining of the colon. 2  It may cause abdominal pain and diarrhea with or without blood. 3  Fever may be present.
Definition of resonant frequency. : a frequency capable of exciting a resonance maximum in a given body or system.
The absolute frequency is the number of times that a certain value appears in a statistical study. It is denoted by fi. The sum of the absolute frequencies is equal to the total number of data, which is denoted by N. This sum is commonly denoted by the Greek letter Ï (capital sigma) which represents 'sum'. The relative frequency is the quotient between the absolute frequency of a certain value and the total number of data. It can be expressed as a percentage and is denoted by ni. The sum of the relative frequency is equal to 1.