Level 4 from the available levels till 12 forms the corporate ladder structure inside Amazon. And it's how Amazon functions. Levels up to 3 represent manual workers who take in hourly wage. From Level 4 the jobs are reserved for those who have graduated. Level 4 constitutes those who have freshly graduated. So, a Level 4 Amazon Business Analyst's salary would be around 9 Lakhs per annum and could be anywhere between 15 Lakhs & 22 Lakhs, according to stats from Glassdoor.com.
If you wish to get yourself skilled and trained in the Business Analytics domain, then I would recommend you with one of the best Business Analyst training courses from one of the most reputed e-learning training institutes like Intellipaat. If you are just starting out in the field of Business Analytics, check out the following video on the Business Analytics course.