A Decision Chart is one tool used when making decisions, and it can be particularly useful in the field of machine learning. The chart helps to visually map out criteria, or conditions, that must be met before a decision can be made. For example, when considering job offers with a specific salary range, a Decision Chart can help define the parameters: If the salary is between $50,000–80,000, then accept; if the offered salary is lower than that range, it might be best to decline.