Practice quiz: Case studies

4 questions. Pick an answer to see if it is right. You can try as many times as you like. These are for practice: the final test has different questions.

1. 1.Where did the key X-ray evidence for the DNA double helix come from?

   New experiments in Watson and Crick's paperRosalind Franklin and Maurice Wilkins, published alongside itA later paper in 1970There was no evidence
2. 2.What is a limit of BLEU as a measure of translation quality?

   It cannot be computedIt measures word overlap with reference translations, not human judgementIt only works for FrenchIt always favours older models
3. 3.Why could the 1998 Wakefield paper not show that a vaccine caused anything?

   It was too longIt was a small case series with no control groupIt used the wrong statistics softwareIt was a preprint
4. 4.Where can you check whether a paper has been retracted?

   Only by emailing the authorsThe publisher's page and the Retraction Watch databaseSocial mediaYou cannot