Question

Describe the possible negative effects of proceeding directly to mine data that has not been prepared.

Answer 1

Answer)
Data pre-processing is the process using which we can clear and also transform the data before to processing and analysis of the data and mine the data. But it is a very important task before the actual data is taken forward and mined.
There are several negative effects which can occur when we proceed directly to mine the data which has not been prepared such as:
Errors can be there and most probably will be there in the raw data before pre-processing which can hamper the data mining and deliver incorrect results
Quality of the data extract won't be good for data mining and results
Business decisions made out of such data will not be fruitful and correct
The data will not be future proof
Data will not be scalable and cannot be used everywhere
Data usage and collaboration cannot be made on the non-processed data.