I want to know the answer to the following question:
How many economists were cited as pointing out data errors in the HDI?
All the background I'm provided with is that "They identified three sources of data error which are due to (i) data updating, (ii) formula revisions and (iii) thresholds to classify a country’s development status and conclude that 11%, 21% and 34% of all countries can be interpreted as currently misclassified in the development bins due to the three sources of data error, respectively.". Is that enough to answer the question?
Answer: yes