In simple linear regression a single independent variable is used to predict the value of a dependent variable. In multiple linear regression two or more independent variables are used to predict the value of a dependent variable. The difference between the two is the number of independent variables.
Cellulitis (sel-u-LIE-tis) is a common, potentially serious bacterial skin infection. Cellulitis appears as a swollen, red area of skin that feels hot and tender. It can spread rapidly to other parts of the body. Cellulitis isn't usually spread from person to person. Skin on lower legs is most commonly affected, though cellulitis can occur anywhere on your body or face. Cellulitis might affect only your skin's surface. Or it might also affect tissues underlying your skin and can spread to your lymph nodes and bloodstream.
Cellulitis Treatment. The treatment depends on the severity of the infection. Cellulitis may be a small, localized infection or it may spread to the lymph nodes and bloodstream and cause septicemia, or blood poisoning. Generalized signs of infection, including fever, chills and/or sweating, and aches. 2  Red, hot streaks running down an arm or leg can indicate cellulitis in or around a vein, or that has spread into the bloodstream. 3  Most cellulitis occurs on the calf of the leg, but it can occur anywhere on the body.