How to come up with this value?taking "demand Whatsapp Mobile Number List for taxis to work" as an example, it can be further disassembled: demand for taxis to work = number of people at work * probability of taxis, if you can get the number of people to work and the probability of taxis from the Whatsapp Mobile Number List statistical data, you don't need to disassemble it further. The result can be calculated directly. (disassemble as shown below) problem solving 012 | please estimate the number of taxis in a city 4.
Reasonableness review in fact, at the Whatsapp Mobile Number List above step, you have already obtained the answer. However, the answer is not over, and the reasonableness review is very critical. You need to quickly double-check the entire process to make sure all the values are reasonable. For example, you finally Whatsapp Mobile Number List calculated that there are 8,000 taxis in beijing, but in 2005, there were 66,600 taxis in beijing (data from the taxi industry association). The urban development and the flow of migrants in recent years cannot be reduced. This obviously goes against common sense.
In addition to this, special attention needs to be Whatsapp Mobile Number List paid to whether special circumstances have been taken into account during the verification process . Suppose you push back the number of taxis based on "user demand for taxis", but you forget to take into account the "air Whatsapp Mobile Number List passenger rate", and the final number will be lower than the actual number. 5. Problem solving example 1. Estimate the number of taxis in beijing the first step is to clarify the problem: if it is a taxi that can operate normally in beijing, then the problem becomes "how many taxis are in operation in beijing".