T

t-shirt sizing, 145–146

talking about estimates. See communication; principled negotiation

targets, 3, 173, 269

communicating about, 4–6

determining if realistic, 13

tasks and responsibilities (project-related)

allocating effort to, 233–238

checklists, 110

defect production estimates, 241

granularity of, 106, 116

overall best/worst case, creating, 120–126

overlooked in estimates, 44–46, 110

team credibility, 28. See also communication

team estimates. See structured expert judgment

team size. See project effort

technical foundation, underestimation and, 22

techniques for estimation, 77–81

by analogy, 127–133

basic approach, 127–132

effort estimates, 209–210

estimating project size, 205

estimating schedule, 223–224

obtaining detailed information, 128

size comparisons, 129

uncertainty with, 128

applicability tables, explained, 81

computation, 83–84

converting counts to estimates, 86–88

stage-gate processes, 187

counting, 84–86

computing estimates with, 86–88

function points, 200

stage-gate processes, 187

Delphi technique, 150–155

how to choose, 77–80

judgment. See expert judgment; off-the-cuff estimates

multiple approaches, using, 165–169

for effort, 218

for project size, 206

ranges, presenting, 256

for schedules, 231–232

stage-gate processes, 187

proxy-based, 135–147

fuzzy logic, 136–138, 205

standard components approach, 138–141

story points, 142–144, 205

t-shirt sizing, 145–146

software. See estimation software

test for estimation skills, 15–19, 273

tester-to-developer ratios, 237

tightening estimates. See flow of estimates

time measures, data on, 95, 97. See also schedules

time periods, expressing, 255

tool support, effect of, 65

tools, estimation. See estimation software

total activity, estimating, 235

tracking accuracy of estimates, 111

tracking progress

requirements changes and, 42

visibility of completion status, 27