Comparative: Uses a similar historical project., Can also be known as analogous or top-down estimating., Useful for a high-level estimate when developing the business case., Parametric: Uses historic data with the ability to scale up or down.., The reliability of data and project conditions need to be considered when using unit rates., Analytical: Estimates are applied to the work packages., Can also be known as bottom-up estimating., Creates a more accurate estimate during the definition phase., Delphi: Uses experts to determine estimates., Can be a time-consuming process., Versatile method that can be applied to different parts of the project.,

Estimating Techniques

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