In the world of managing data and querying data in sql server databases one of the areas that require good understanding is the use and meaning of SQL Server Statistics. One of the key areas that is often discussed and required by many businesses is area of performance. There is a very good article on SQL Server statistics by Grant Fritchey called SQL Server Statistics Questions We Were Too Shy to Ask. Here is the link enclosed: https://www.simple-talk.com/sql/performance/sql-server-statistics-questions-we-were-too-shy-to-ask/. He lists very valid questions about statistics and provided detailed explanations.