Answer:
Detailed estimate is the most reliable estimation. A imprecise calculation of the value, number, quantity, or extent of something is defined as an estimate. When a solution is acceptable and is also very close to the true answer, estimates of numbers are employed to make mental calculations easier and faster.
An estimate is a guess or an opinion on the size, worth, or cost of a product or value. A list of times and costs that it may cost to accomplish a building task is an example of an estimate.
In that circumstance, detailed estimation is the most reliable estimate. The definition of a dependable estimate is one that includes a rough estimate of the costs that are likely to be incurred for various items.