To develop data interpretation skills for the UPSC exam, candidates should engage in regular practice with charts, graphs, and tables that are representative of UPSC-style questions. Analyzing various types of data from sources like economic surveys and reports can enhance familiarity. Utilizing resources such as mock tests that include data interpretation sections will also strengthen these skills. Furthermore, discussing data interpretation problems with peers or mentors can provide new insights and strategies. Continuous exposure and practice can significantly boost confidence and proficiency in tackling data-related questions.