Ellen is estimating how much it will cost to re-carpet the executive conference room. after selecting the grade and pattern of carpet, ellen multiplies the carpet price per square yard times the number of square yards in the conference room to derive the total price of the material. this estimating method is called

Parametric estimating

Explanation:

Parametric Estimation is based on the statistical relationship between historical data (parameters) and other variables to determine estimates for activity parameters, such as cost, budget, and duration of a given object or resource. It is a simple and easy to apply and repeatable template, but only in the early stages of the project when work packages have not yet been defined. An example of this can be seen in the question above, where Ellen selects the grade and pattern of the carpet she wants for the room being remodeled, then she multiplies the price of the carpet per square meter by the number of square meters in the room. conferences to derive the total price of the material