Answer
Ratio analysis computes and compares financial ratios (gross margin, current ratio, receivables/inventory days, gearing) across periods, to budget, and to industry norms to spot anomalies signaling possible misstatement or business risk. Unexpected ratio movements prompt inquiry and further testing.
Gross margin: (Revenue - COGS) / Revenue
Receivables days: (Receivables / Credit sales) x 365Real-world example A sudden jump in receivables days suggests possible overstated revenue or collection problems to investigate.