Section outline

  • LGD: Dichotomous Tests
    Sensitivity, specificity, predictive value, prior and posterior probability; 2x2 table method for getting posterior probability; probability and odds;  likelihood ratios, the likelihood ratio slide rule, false-positive and false negative confusion; use of X-graphs to understand testing and treatment thresholds

    Faculty:  Thomas Newman

    • Lecture Slides:

    • Lec 2 Dichotomous tests 2021-0921 File

      Note:  This PPT file is almost identical to the one I used for the recorded lecture.  The only differences are:

      • In the speaker notes I corrected how I misspoke in the recorded lecture on slides 6 and  40. 

      • The substantive difference is that I (TN) made logical error on slide 57 and in my discussion of it in the lecture recording, which is corrected on the slide and in the speaker notes for that slide.  If you want a challenge, try watching the lecture to see if you notice the error before finding the answer in slide 57 of this PPT.



    • Lecture Audio/Video Recording (Access restricted to registered students):

    • Lecture 2 -- Dichotomous Tests (1:17:35) URL

      Tom Newman explains dichtomous tests: sensitivity, specificity, positive/negative predictive value, and more.

      Not available unless: You belong to Registered students only

    • Large Group Discussion (Access restricted to registered students):
      Brief formal review of lecture followed by question and answer discussion. Recorded lecture should be viewed prior to this session.

    • Zoom Recording of Large Group Discussion (Access restricted to registered students):

    • Recording of Zoom Large Group Discussion 9/28/2021 Media Resource
      Not available unless: You belong to Registered students only

    • Required Reading:

    •  EBD-2:  Chapter 2, Dichotomous Tests

    • Optional Reading:

    • Regret graph calculator URL
    • LR Slide Rule URL
    • Cost-Benefit X Graph and calcs MAK File

      This is the Excel version of the Regret Graph Calculator available at https://ebd-2.net/regret-calculator/


      Not available unless: Your ID number contains 02

    • Assignments: Problem Set #2, Dichotomous Tests

    • PSet2 Dichotomous tests 2021-0923 File

    • Assignment due date: 9/30/2021 at 1:15 PM

    • Upload Problem Set #2 Assignment
    • Upload Problem Set #2 (M.Laker section) Assignment
      Not available unless: You belong to M. Laker

    • Assignment Answer Key (Access restricted to registered students):

    • PSet #2 Answer Key File
      Not available unless: You belong to Registered students only