The measurement standard of variables in SPSS

In SPSS, each variable has a metric that describes the meaning and attributes of the variable and affects subsequent analysis.

1. nominal : The nominal class variable, the categorical variable represents the category of things, can only calculate frequency and frequency, there is no size, order, rank between categories. The data for a fixed class variable can be a numeric value, or it can be a character.

2. serial number : The sequence number denotes the sequence variable, the order variable represents the thing's ordering or the rank, may rank or compares the merits and demerits, may calculate the frequency and the accumulative rate, the ordinal variable data may be the numeric value, may also be the character.

3. Measurement : The measure represents the fixed-distance variable and the fixed-ratio variable, these two kinds of variables can express the difference between the things clearly, has very many data line information, is also the advanced measurement level, in the statistical analysis mainly participates in the subtraction arithmetic operation, its data content is often the numerical value.

The measurement standard of variables in SPSS