The different ways of estimating project activities resource requirements: Analogous estimating (top-down) When information regarding resources from a previous similar project is used. Parametric estimating When data about the current project is put into a formula, spreadsheet, database, or computer program that comes up with an estimate. Bottom-Up estimating Building up estimates based on individual estimates from the people who will do the work. With what you learned, consider a project that you want to be involved in the future that you will use an estimating technique to provide numbers for the conceptual plan. Briefly describe the type of project and identify the estimating method you will use. Explain why you prefer to use it over the other method.