Before diving into analysis, always verify some things. Lets prepare checklist: - Clean - Preapred well, free of errors - Complete - No missing information - Comprehensive - Must cover the questions being asked - Calculate - Must be workable & usable by business users - Credible - Must be collected in a valid way - Chosen - No irrelevant / confusing data Remember if you are analyst, it is not always to prepare fancy dashboards, excel sheets or some analysis, it has "boring" parts as well, such as cleaning, preparing and modeling data. What do you think about it? Do you also spend much time for this?