The Utility Index is a measure used to evaluate the usefulness or value of a product, service, or investment. It helps consumers and businesses make informed decisions by comparing the benefits and costs associated with different options. A higher Utility Index indicates greater overall value, while a lower index suggests less utility. This index can be applied in various fields, including economics, marketing, and finance. For example, in economics, it can help assess consumer satisfaction, while in finance, it can guide investment choices by highlighting which assets provide the best returns relative to their risks.