A


accuracy of estimates. See also accuracy of estimation method; sources of estimation error

benefits of, 27–29

counting error. See counting

expressing uncertainty, 251–255

flow of estimates (reestimating), 171–180

chronological, 173–175

poorly estimated projects, 171

recalibrating after missed milestones, 175–179

scheduling reestimation, 177–178

well-estimated projects, 172–173

historical data and, 91–95

need for, 13

overestimation vs. underestimation, 21–24

precision vs., 51–52

reviewing. See reviews of estimates

software industry track record, 24–27

accuracy of estimation method. See also specific estimation technique by name

choice of technique and, 80

counting error, 85, 88. See also counting

effort estimates, 218

expert judgment, 88, 152

expressing uncertainty, 251–255

problems with common techniques, 30

project size estimates, 206

schedule estimates, 231

activities. See tasks and responsibilities

activity-based work breakdown structure. See WBS

adjusted function-point totals, 201–202

adjustment factors, Cocomo II, 67–70

administrative support, effort of, 247

aggregate best and worst cases, 120–126

allocating effort to various tasks, 233, 237

analogy, estimation by, 127–133

basic approach, 127–132

effort estimates, 209–210

obtaining detailed information, 128

project size, estimating, 205

schedule, estimated, 223–224

size comparisons, 129

uncertainty with, 128

Angel (Analogy Software Tool), 163

applicability tables, explained, 81

Approved Product Definition phase, 35, 39. See also Cone of Uncertainty

iterative development, 40–41

unstable project requirements, 42, 247

requirements omitted from estimates, 44–46, 110

software to account for, 160

assessing estimates. See reviews of estimates

assumptions in estimation, communicating, 249–251

authority, estimation software as, 160–162

average data for industry, 91, 100–102

defect production, 242

effort graphs, 210–216

ISBSG method, 216–218

average outcome, 8, 59. See also diseconomies of scale

averages, meaningful, 86

avoiding bias. See bias and subjectivity




Software Estimation. Demystifying the Black Art
Software Estimation: Demystifying the Black Art (Best Practices (Microsoft))
ISBN: 0735605351
EAN: 2147483647
Year: 2004
Pages: 212

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