Natural Gas Reforming/Gasification: Synthesis gas, a mixture of hydrogen, carbon monoxide, and a small amount of carbon dioxide, is created by reacting natural gas with high-temperature steam. The carbon monoxide is reacted with water to produce additional hydrogen.
Measurement scales are used to categorize and/or quantify variables. This lesson describes the four scales of measurement that are commonly used in statistical analysis: nominal, ordinal, interval, and ratio scales. Each scale of measurement satisfies one or more of the following properties of measurement.
Ratio measurement scales. The last metric scale is called ratio measurement scales. Ratio along with interval scales affords the most precise data. With both there are equal intervals or units between any two consecutive numbers. The only difference between ratio and interval scales is the role of zero (0). In interval scales zero is artificial rather than real. IQ and standardized tests for performance assessment have a zero (0), but it is artificially created rather than real. In ratio scales, zero is real.