**Core Concept**
The question is referring to a method used to categorize or rate the quality of something, which is a common practice in various fields, including medicine, research, and quality control. This method involves assigning a descriptive label to a numerical score or value, making it easier to communicate and understand the level of quality or performance.

**Why the Correct Answer is Right**
The method used to categorize quality as good, satisfactory, and poor is called the **Likert scale** or **Likert method**. This method was developed by Rensis Likert and is widely used in various fields, including medicine, psychology, and sociology. In the Likert method, a numerical score is assigned to a descriptive label, with the score corresponding to a particular level of quality or performance. The labels "good," "satisfactory," and "poor" are commonly used to categorize quality, with "good" typically corresponding to a high score, "satisfactory" to a moderate score, and "poor" to a low score.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it does not specify a method used to categorize quality. It is a vague term that could refer to various methods.
**Option B:** This option is incorrect because it is a type of rating scale, but it is not the specific method used to categorize quality as good, satisfactory, and poor.
**Option C:** This option is incorrect because it is a type of statistical analysis, but it is not a method used to categorize quality.

**Clinical Pearl / High-Yield Fact**
When using the Likert scale or Likert method, it is essential to remember that the numerical score should be meaningful and related to the descriptive label. This ensures that the quality or performance is accurately represented and communicated.

**Correct Answer: B. Rating Scale.**