D x 2 x 1 2 y 2 y 1 2. The Distance Formula is a useful tool in finding the distance between two points which can be arbitrarily represented as points. A mathematical symbol is a figure or a combination of figures that is used to represent a mathematical object an action on mathematical objects a relation between mathematical objects or for structuring the other symbols that occur in a formulaAs formulas are entirely constituted with symbols of various types many symbols are needed for expressing all mathematics.
For deviation just think distance.
The same distance from each other or in relation to other things. For deviation just think distance. Add all the distances you have together and then divide that number by how many distances you have. For a data set the arithmetic mean also known as average or expected value is the central value of a discrete set of numbers.