1. A method implemented in a computer infrastructure having computer executable code tangibly embodied on a computer readable storage medium having programming instructions operable to: create using a processor of the computer infrastructure an initial test plan including initial estimates of effort and defect distributions, the creating comprising: receiving empirical data; and determining test activities based on the empirical data, wherein the initial estimates of the effort and the defect distribution comprises calculated values associated with each test activity, create an alternative test plan including alternative estimates of effort and defect distributions, the creating comprising: providing a questionnaire to a user for adjusting the test activities of the initial test plan; generating suggestions for a set of alternative test activities based on answers provided by the user for the questionnaire, and determining alternative test activities based on suggestions selected by the user from the set of alternative test activities, wherein the alternative estimates of the effort and the defect distribution comprises calculated values associated with each alternative test activity; and display at least one metric of the initial test plan and the alternative test plan side by side for comparison by the user.