When working with a large data set, it can be useful to represent the entire data set with a single value that describes the middle or average value of the entire set. In statistics, that single value is called the central tendency and mean, median and mode are all ways to describe it.o find the variance in a data set, subtract each number from the mean, and then square the result. Find the average of these squared differences, and that is the variance in the group. In our original group of five servers, the mean was 99.
Brain Shunt. A brain shunt is a narrow piece of tubing that is inserted into the brain in the fluid-filled ventricle. The tubing is then passed under the skin into another area of the body, most often into the abdomen.Occasionally, the shunt tubing can be placed into one of the chambers of the heart or the lining of the lungs. brain shunt is a narrow piece of tubing that is inserted into the brain in the fluid-filled ventricle.
The most common treatment for hydrocephalus is surgery to put in a shunt. The shunt is used to drain extra CSF from ventricles in your child's brain to some other part in their body. There, the fluid is absorbed.The goal of putting in a shunt is to drain the CSF that your child's body makes each day (about a pint).This creates normal pressure inside your child's head.he shunt has three parts: 1  A tube that goes into the ventricle where fluid is building up. 2  A valve that controls how much fluid drains out. 3  This controls the pressure in your child's head and keeps fluid flowing away from the brain only. 4  A tube that comes off the valve and goes into some other part of the body.