Sample interview questions: How do you handle data quality control in your statistical analysis?
Sample answer:
- Review the data for errors and inconsistencies. Check for missing values, outliers, and other errors that could affect the analysis. This can be done manually or with the help of data cleaning software.
- Verify the accuracy of the data. Ensure that the data has been collected and recorded correctly. This can be done by checking the data against the original source or by conducting a data audit.
- Standardize the data. Make sure that the data is formatted consistently and that all variables are using the same units of measurement. This will make it easier to analyze the data and compare it to other datasets.
- Transform the data. Some statistical analyses require the data to be transformed in order to meet the assumptions of the test. For example, data that is skewed may need to be log-transformed.
- Weight the data. Weighting can be used to give more importance to certain observations in the analysis. For example, if you have a su… Read full answer