The notion of normal distribution, being one of the most important distributions in probability theory, has been extended far beyond the standard framework of the univariate (that is one-dimensional) case (Case 1).
The metric unit of weight (or any other force such as that of a  stretched spring, or a bat striking a ball, or a locomotive pulling  a train) is called the newton.   Neâ¦wton is the unit of weight (exactly of force) in the SI; in base  units is kg.m/s2.
Not to be confused with specific gravity. The specific weight (also known as the unit weight) is the weight per unit volume of a material. The symbol of specific weight is Î³ (the Greek letter Gamma). A commonly used value is the specific weight of water on Earth at 5Â°C which is 9.807 kN/m3 or 62.43 lbf/ft3. The terms specific gravity, and less often specific weight, are also used for relative density.