How do researchers determine what is true based on the data they collect? This question is one of the central concerns of statistics, which uses mathematical models to draw useful conclusions about the real world.

Education in the United States is mainly provided by the public sector, with control and funding coming from three levels: state, local, and federal, in that order. The common requirements to study at a higher education level in United States will include your admissions essay (also known as the statement of purpose or personal statement), transcript of records, recommendation/reference letters, language tests

A certificate is an educational goal for many students who want to improve their visibility among aggressive job applicants. Certificates may help provide students with increased skills and experience in a number of diverse disciplines, such as business, finance, hospitality, leadership, and management.