The following are a few problems that are usually encountered while performing data analysis.
- Presence of Duplicate entries and spelling mistakes, reduce data quality.
- If you are extracting data from a poor source, then this could be a problem as you would have to spend a lot of time cleaning the data.
- When you extract data from sources, the data may vary in representation. Now, when you combine data from these sources, it may happen that the variation in representation could result in a delay.
- Lastly, if there is incomplete data, then that could be a problem to perform analysis of data.