Although most people can describe an object or group by its name, it takes more than just knowing a name to determine its relative position or importance in a hierarchical system. There are several methods of measuring and ranking the relative standing or importance of an object. Before doing any statistical analysis, one needs to be familiar with these types of relationships and how they can be represented by your data.
One way to measure an attribute is by assigning a number value to each attribute. For example, if you have two measurements, the first measurement is “attribute is greater than value”. The second measurement, or relative ranking, is the difference between the two values.
The numerical value of an attribute is different from the attribute value. If an object is not a number value, then the numerical value is simply called “value”. The numerical value of an attribute is the difference between the actual attribute value minus one. The numerical value of an attribute is called “calculated numerical value”.
For most attributes, calculating the numerical value is simple, but there are a few exceptions. For example, the numerical value of the description attribute is computed by writing the description as a sequence of characters with each character representing one percent of the attribute’s value. The calculated numerical value is computed as follows:
A sequence of characters, which can represent the attribute with the character sequence “100”, represents one percent of the numerical attributes value. Inthe sequence of characters “AADd”, for example, there is one A, and five D’s. Therefore, the calculated numerical value is the sum of the five D’s. If we place the attribute at the middle of the sequence of A’s, it would then be computed as one X 5 = one percent of the numerical value.
Other kinds of calculations, which are also called integral calculations, are based on the sum of one, or calculated numerical value. These include the difference between two numerical values, the ratio of two numbers, and the square root of the difference between two numerical values. Integrals can be expressed using other sequences of characters, but the decimal point must be placed at the end of the sequence.
The difference between the numerical value and the calculated numerical value is called the relative numerical value. A relative numerical value is computed as follows:
To compute the relative numerical value, the difference between the two numerical values is computed. The calculation is as follows:
The relative numerical value of an attribute is different from the attribute numerical value. If an object is not a number value, then the relative numerical value is simply called “value”.
Another method of ranking objects by their numerical value is to take the square root of their numerical values. In order to compare two items, one must be able to calculate the square root of their numerical values. The formula for calculating a square root of an attribute is: