"At High Flyer Airlines, managers rate their subordinates on a continuum from 1 to 7. A score of 1 indicates unsatisfactory performance, and a score of 7 indicates superior performance. High Flyer uses a as its performance appraisal method."

The answer,in this case would be Graphic Rating Scale or Likert Scale.

Explanation:

In a statistical research study,rating scale or likert scale is used indicate the intensity of magnitude of any variable or phenomenon related to the concerned research topic.Rating scale or likert scale is commonly used in statistical research methods such as surveys or questionnaire where various options are presented to the respondents or participants and a corresponding numerical value associated with each response options.The response options are scaled or ranked numerically according to the intensity or magnitude of the variable or the phenomenon which is included in the survey or questionnaire question.In this instance,the subordinate performance has been scaled or ranked on a rating or likert scale from 1 to 7 which represent the numerical values associated with each rank or scale.

It would be contaminated with germs