Dear ,
In the lanuguage of Compensation management , it is known as Broad Ranges , the figures shown is the question is the basic salary .with upward elevation/Promotion or increment an employee will achieve the next higher basic . Such a structure is designed to differentiate the skills, experience of each employee and this strcuture maintains the harmony of compensation paid to the employees.Generally organisation well organised create such a compensation structure , each slab of progression are placed against the grade.It starts with minimum baisc being achieved by an employee in that particular garde and ends with the highest basic in that particular grade.To arrive at this kind of salary progression structure a lot of working/study is done such understanding the present compensation structure of the organisation, comparision of structure with the indutry and finally comparision of structure with the competitors of the business and capacity of the employer to pay.once done all these then mean, standard deviation , bell curve of each of the compensation components is prepared to take a decisions on the salary progression under each grade.
Regards,
AS