| No. | Term | Definition |
|---|---|---|
| 1. | ± margin | A plus-or-minus uncertainty band. |
| 2. | 50/50 call | An even-odds judgment. |
| 3. | 80/20 guess | A practical rough prioritization guess. |
| 4. | Appraisal | An assessed value or judgment. |
| 5. | Approximation | A close, not exact, value. |
| 6. | Assessment | A considered evaluation or judgment. |
| 7. | Assumption | A taken-for-granted starting figure. |
| 8. | Back-of-envelope | A quick rough calculation. |
| 9. | Ballpark figure | A rough, informal number. |
| 10. | Baseline | A starting reference value. |
| 11. | Benchmarking | Gauging against a standard reference. |
| 12. | Best-case figure | An optimistic bound value. |
| 13. | Bid | A proposed price to do work. |
| 14. | Budget projection | A forecast of planned spending. |
| 15. | Calculation | A computed numerical result. |
| 16. | Confidence interval | A probable range around a value. |
| 17. | Conjecture | A guess based on limited evidence. |
| 18. | Cost projection | A forecast of costs. |
| 19. | Costing | Determining likely costs. |
| 20. | Deduction | A conclusion drawn from facts. |
| 21. | Delphi estimate | Expert-consensus derived figure. |
| 22. | Diagnosis | An evaluative identification of a condition. |
| 23. | Draft figure | A preliminary number for review. |
| 24. | Educated guess | An informed but uncertain guess. |
| 25. | Evaluation | A judgment of worth or amount. |
| 26. | Expectation | A believed likely outcome or amount. |
| 27. | Extrapolation | Projecting beyond known data. |
| 28. | Fermi calculation | A rough order-of-magnitude calc. |
| 29. | Figure | A numerical amount. |
| 30. | Financial forecast | A prediction of financial results. |
| 31. | Forecast | A prediction based on information. |
| 32. | Guess | An uncertain choice or number. |
| 33. | Guesstimate | A guess presented as calculated. |
| 34. | Guestimation | Informal blend of guess and calc. |
| 35. | Hunch | An intuitive judgment. |
| 36. | Hypothesis | A tentative explanation or value. |
| 37. | Inference | A conclusion from evidence. |
| 38. | Informed guess | A guess guided by knowledge. |
| 39. | Interpolation | Estimating between known data points. |
| 40. | Itemized quote | A detailed price proposal list. |
| 41. | Judgment | An opinion formed after thought. |
| 42. | KPI projection | A forecast of key metrics. |
| 43. | Likely value | The most probable amount. |
| 44. | Line-item budget | A budget broken into categories. |
| 45. | List price | A stated price before discounts. |
| 46. | Lowball figure | An intentionally low rough number. |
| 47. | Market valuation | Value based on market conditions. |
| 48. | Measure | A determined amount or extent. |
| 49. | Metrics forecast | A prediction of measured outcomes. |
| 50. | Model output | A computed result from a model. |
| 51. | Monte Carlo result | A simulated range of outcomes. |
| 52. | Notional value | A theoretical stated amount. |
| 53. | Number | A stated quantity. |
| 54. | Offer | A proposed price or terms. |
| 55. | Opinion | A personal judgment or belief. |
| 56. | Order of magnitude | A power-of-ten scale judgment. |
| 57. | Outlook | An expected future situation. |
| 58. | Parametric estimate | Derived from statistical relationships. |
| 59. | Penciled-in figure | A tentative number, changeable. |
| 60. | Prediction | A statement about a future amount. |
| 61. | Preliminary figure | An initial number, not final. |
| 62. | Price quote | A stated price for goods/services. |
| 63. | Pricing | Setting or suggesting a price. |
| 64. | Prognosis | A forecasted outcome. |
| 65. | Projection | An expected future value. |
| 66. | Proposed budget | A suggested spending plan. |
| 67. | Provisional figure | A temporary number pending confirmation. |
| 68. | Quantification | Expressing something as a number. |
| 69. | Quote | A stated price to supply work. |
| 70. | Range | Upper and lower likely bounds. |
| 71. | Rate card | A schedule of standard prices. |
| 72. | Reckoning | A calculated assessment. |
| 73. | Rough calculation | An approximate computation. |
| 74. | Rough figure | An imprecise number. |
| 75. | Rough idea | A general sense of amount. |
| 76. | Rough order | An approximate scale or size. |
| 77. | Rule-of-thumb | A practical rough guideline. |
| 78. | Scenario analysis | Exploring outcomes under assumptions. |
| 79. | Score | A rating or numeric assessment. |
| 80. | Shot in the dark | A very uncertain guess. |
| 81. | Sizing | Determining approximate size or scope. |
| 82. | Speculation | Guessing without firm evidence. |
| 83. | Speculative figure | A number based on conjecture. |
| 84. | Stab | An attempt at a guess. |
| 85. | Statistical estimate | A value inferred from data. |
| 86. | Survey result | An aggregated reported measure. |
| 87. | Take | One’s view or judgment. |
| 88. | Tentative figure | A not-yet-confirmed number. |
| 89. | Test calculation | A trial computation. |
| 90. | Time estimate | An expected duration. |
| 91. | Topline number | A high-level summary figure. |
| 92. | Trial value | A provisional value for testing. |
| 93. | Underestimate | A figure set too low. |
| 94. | Unit cost | Cost per single item. |
| 95. | Valuation | A determination of worth. |
| 96. | Value judgment | A subjective assessment of worth. |
| 97. | Verdict | A decided judgment or conclusion. |
| 98. | Vision | A conceived future picture or amount. |
| 99. | WAG | A wild guess. |
| 100. | Wild guess | A guess with little basis. |
