A critical data analyst interview question you need to be aware of. A Data Analyst can confront the following issues while performing data analysis:
- Presence of duplicate entries and spelling mistakes. These errors can hamper data quality.
- Poor quality data acquired from unreliable sources. In such a case, a Data Analyst will have to spend a significant amount of time in cleansing the data.
- Data extracted from multiple sources may vary in representation. Once the collected data is combined after being cleansed and organized, the variations in data representation may cause a delay in the analysis process.
- Incomplete data is another major challenge in the data analysis process. It would inevitably lead to erroneous or faulty results.