The document outlines 10 key statistics that every sales manager should know about sales performance. Some of the main points include: 2/3 of salespeople miss their quotas; over half of salespeople close deals at less than 40%; the best sales reps are 250% better at qualifying leads; and almost half of all sales teams don't have a defined sales process or playbook. The document emphasizes that knowing these types of statistics about a sales team's performance is important for sales managers to effectively coach the team and implement strategies to improve results.