A practice sample questions document (Practice sample questions.pdf & Practice sample questions - database.csv) is provided with a solution(Practice sample questions - solutions. ipynb)for reference, please follow the language and method used in this sample for solving the questions.
All answers should be based on the DC_properties.csv dataset provided.
Data description: This dataset contains sale prices and information of 97,780 properties in Washington DC. The earliest recorded sale was in 1982, and the most recent recorded sale was in 2018. Descriptions of each column are provided in the appendix. Any values of -1 in any column represents missing value.
Sample Solution