Originality of angle of exploration (Interesting questions answered, use of valid alternative datasets)
Quality of techniques used to pre-processed data and to give valuable insights about the dataset(s)
Quality, relevance and effectiveness of visualisations used for exploration and/or analysis
Sophistication and correctness of methods of analysis. Cannot score high if cannot justify method.
Use of metrics in showing performance of analysis.
Ability to interpret the result of the analysis and take a step back to explain the bigger picture. Ability to make a data-driven "business" decision.