Data Science
3 questions
Data Science: how to collect datasets and clean data?
On the topic of "Data Science": start with defining terms and the scope of the question. In science, half the answer is asking the right question.
Data Science: how to choose models and metrics?
Practice for "Data Science": look for review articles and meta-analyses — they provide a better picture of evidence than single studies.
Data Science: how to replicate experiments and publish code?
Answer for "Data Science": separate hypotheses from proven results and look at methods (sampling, control, statistics).