Incline the board about 15-20 degrees so that the feet are above the head. Optionally, put a damp cloth over the face to keep the water clinging to the face (Khmer Rouge technique), or put plastic wrap over the mouth but not the eyes or nose to prevent water from escaping the throat and sinuses (CIA technique).he water stays in the head, filling the throat, mouth, and sinuses with water. The lungs don't fill up with water so your prisoner doesn't asphyxiate, but they *do* feel their entire upper respiratory system from sinuses to trachea filled with water, simulating drowning.
Mean (or arithmetic mean) is a type of average. It is computed by adding the values and dividing by the number of values. Average is a synonym for arithmetic mean â which is the value obtained by dividing the sum of a set of quantities by the number of quantities in the set. An example is (3 + 4 + 5) Ã· 3 = 4. The average or mean is 4. Two other common forms of averages are the median and mode. The median is the middle value of the set when they are ordered by rank â or the point in a series of numbers above and below which is half of the series.
An average can be described in many ways. Aside from expressing it as the mean of the sample, it can also be given as the median or the mode. Median is the central point of the set. In statistics, it is usually the number that occurs in the middle of a set of numbers. A description of the average can be in the median, some of the time, if it is considered as the most suitable way to describe the central tendency of a particular sample.