Term Frequency is a measure used in text analysis that indicates how often a specific word or term appears in a document. It helps to identify the importance of a term within that document. The more frequently a term appears, the more significant it may be to the content of the text. To calculate Term Frequency, you divide the number of times a term appears by the total number of terms in the document. This ratio provides a normalized value, allowing for comparisons across different documents or sections of text, making it easier to analyze and understand the focus of the content.