The Sciencetech databank contains approximately 17,000,000 citations. You have b

Question

The Sciencetech databank contains approximately 17,000,000 citations. You have been asked to see a patient who has an unusual condition (Condition X) that you are not very familiar with. You wish to do a literature search to find out more about Condition X, so you go to PubMed and enter a query for that condition. Not knowing very much about the condition, but knowing that it is relatively rare, you use rather general search terms and do not set any limits on your search strategy. Your search retrieves 855 references. Scanning through the list of retrieved references you determine that there are 495 references in your retrieval set that are pertinent to your query. a) Given the information provided above, which (if any) of the following can be calculated: Recall, Precision, Relative Recall? (3) b) Calculate whichever (Recall, Precision, Relative Recall - if any) that can be calculated from the above information. Show all steps in your calculation(s). (3) c) You perform four more searches on the same topic and the combined set of all retrievals from theses five searches results in a total of 1,227 different references, of which a total of 792 pertain to your question about Condition X. With respect to your original search, what additional quantity (Recall, Precision, Relative Recall

Explanation / Answer

Measurement Uncertainty and Propagation - Physics physicsed.buffalostate.edu/pubs/MeasurementAnalysis/MA1_9ed.pdf

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