Cutoff
https://openalex.org/C2778217198
https://www.wikidata.org/wiki/Q556977
Statistics
https://openalex.org/C105795698
https://www.wikidata.org/wiki/Q12483
Mathematics
https://openalex.org/C33923547
https://www.wikidata.org/wiki/Q395
Index (typography)
https://openalex.org/C2777382242
https://www.wikidata.org/wiki/Q6017816
Population
https://openalex.org/C2908647359
https://www.wikidata.org/wiki/Q2625603
Covariance
https://openalex.org/C178650346
https://www.wikidata.org/wiki/Q201984
Structural equation modeling
https://openalex.org/C71104824
https://www.wikidata.org/wiki/Q1476639
Econometrics
https://openalex.org/C149782125
https://www.wikidata.org/wiki/Q160039
Previous research: What has been established or proposed
Data from several studies suggest that …
[INST] Please produce a sentence from the paper. The sentence should not mention the title of the paper, rather it be extracted from the Introducing Work section of the paper.
Please provide one singular full sentence from the paper that serves the function provided, using the example as guidance. Be specific, using relevant terminology from the paper.
Refrain from vague or generic statements. Finally produce a search query in the form of a question targeted towards the knowledge contained therein. 
You must output json with the structure of {'Sentence': sentence, 'Query': query}.
Field: "Statistics".
Paper: "The meaning and use of the area under a receiver operating characteristic (ROC) curve."
Function: "Previous research: What has been established or proposed".
Example Sentence: "Data from several studies suggest that …". [/INST]