What is an example of a cost estimating technique that would be used when producing a summary cost estimate?

One example of a cost estimating technique used for producing a summary cost estimate is the "analogous estimating" method. This technique involves using historical data from similar projects to estimate costs for the current project, allowing for quick and relatively accurate cost assessments. It is particularly useful in the early stages of project planning when detailed information may be limited. By leveraging past experiences, project managers can make informed decisions about budget allocations.