Exam IIBA-CBDA topic 1 question 40 discussion

See BABOK 10.19.3.2 Pg. 272 ROM estimates are often no more than +50% to -50% accurate. A definitive estimate, which is much more accurate, can be made as long as more real-world data is collected. Definitive estimates that are used for predicting timelines, final budgets, and resource needs should ideally be accurate within 10% or less.

See BABOK 10.19.3.2 Pg. 272 ROM estimates are often no more than +50% to -50% accurate. A definitive estimate, which is much more accurate, can be made as long as more real-world data is collected. Definitive estimates that are used for predicting timelines, final budgets, and resource needs should ideally be accurate within 10% or less.

See BABOK 10.19.3.2 Pg. 272 ROM estimates are often no more than +50% to -50% accurate. A definitive estimate, which is much more accurate, can be made as long as more real-world data is collected. Definitive estimates that are used for predicting timelines, final budgets, and resource needs should ideally be accurate within 10% or less.

See BABOK 10.19 Estimation - Rough Order of Magnitude (ROM): a high-level estimate, generally based on limited information, which may have a very wide confidence interval. ROM estimate is a type of estimate used early in a project or when there is limited data available. It provides a rough estimate of costs or other variables, typically with a broad range of accuracy. In this case, since the analytics team is estimating the number of customers within a range of accuracy (+ or - 10%), it aligns with the concept of a ROM estimate.