How do data scientists test the claimed accuracy of a model?












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For example, if you are a data scientist at a company, and a salesperson offers you a pre-trained model that is claimed to have a 90% accuracy of detecting fraudulent transactions. How would you go about verifying this claim?



I would test it on the data that I possess and see what the acc. is for detecting frauds in my data-set, and run a t-test with the sample acc., to see if it is close enough to 90% to make the call that it would detect 90% of all frauds in the entire population.



Let me know if this is the correct way to think about this question.



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    $begingroup$


    For example, if you are a data scientist at a company, and a salesperson offers you a pre-trained model that is claimed to have a 90% accuracy of detecting fraudulent transactions. How would you go about verifying this claim?



    I would test it on the data that I possess and see what the acc. is for detecting frauds in my data-set, and run a t-test with the sample acc., to see if it is close enough to 90% to make the call that it would detect 90% of all frauds in the entire population.



    Let me know if this is the correct way to think about this question.



    Thanks









    share







    New contributor




    JimDoe is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
    Check out our Code of Conduct.







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      $begingroup$


      For example, if you are a data scientist at a company, and a salesperson offers you a pre-trained model that is claimed to have a 90% accuracy of detecting fraudulent transactions. How would you go about verifying this claim?



      I would test it on the data that I possess and see what the acc. is for detecting frauds in my data-set, and run a t-test with the sample acc., to see if it is close enough to 90% to make the call that it would detect 90% of all frauds in the entire population.



      Let me know if this is the correct way to think about this question.



      Thanks









      share







      New contributor




      JimDoe is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.







      $endgroup$




      For example, if you are a data scientist at a company, and a salesperson offers you a pre-trained model that is claimed to have a 90% accuracy of detecting fraudulent transactions. How would you go about verifying this claim?



      I would test it on the data that I possess and see what the acc. is for detecting frauds in my data-set, and run a t-test with the sample acc., to see if it is close enough to 90% to make the call that it would detect 90% of all frauds in the entire population.



      Let me know if this is the correct way to think about this question.



      Thanks







      machine-learning data accuracy





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      JimDoe is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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      JimDoe is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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