XYZ's operating margin is 15%, 14%, 12%, 8% for years 1,2,3,4 respectively. Where would you look to see if this is being cause by external factors or by internal factors? Be specific.

ABC's capital turnover ratio 1.5x's; 1.6x's, 1.7x's, 1.8x's for years 1,2,3,4 respectively. How could you tell if this trend will continue in the future?What does this trend in the capital turnover indicate to the analyst? Be specific.