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.
Mean: It can be defined as the sum total of all the observations divided by the number of observations. ( Note :- the observations have to be quantitative and not qualitative) Median: If the data is arranged in the increasing or decreasing order then the middlemost value of the data is known as the median.