Answer:
Ratio analysis in HRM is the process of determining future HR demand by computing an exact ratio between the specific business factor and the number of employees needed. It thus provides a more precise estimate than trend analysis. For instance, the demand for professors at a university could be forecast on the basis of the student-faculty ratio. Suppose that a university has 10,000 students and 500 professors; the student-faculty ratio is thus 10,000:500 or 20:1. This ratio means that for every 20 students, the university needs 1 professor. If the university anticipates a student enrollment increase of 1,000 for next year, it would need to hire 50 (1000/20) new professors. This is in addition to any hiring needed to fill vacancies from existing faculty who might leave in the meantime.