frame.dzi atten ipt/ ?ou-701 0956&isprv;+8drc=0&q;ì-6925992&cfql-0;&dnb;:0 quiz
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frame.dzi atten ipt/ ?ou-701 0956&isprv;+8drc=0&q;ì-6925992&cfql-0;&dnb;:0 quiz start - My Home Data Mining Monday, D earn @ TENNESSEE STATE UNIVERSITY Dat Communication | Content | ePortfolio Final Fall 2017 - Part B Quiz me Limit: 1:00:00 Time Left: 0:42:11 Mansour Alghamdi: Attempt 1 Questions of 30 questions saved age 1: 1 2 3 4 5 1. 6789 10 Save Question 25 (1 point) What is the Sensitivity of the Model from the results of the Confusion Matrix? Note: Sensitivity or Recall is the proportion of actual positive cases which are correctly identified. 0.70 11 12 13 14 15 0.80 16 17 18 19 20 0.75 21 22 23 24 25 0.78 26 27 28 29 30 Save Legend Question 26 (1 point) What is the Specificity of the Model from the results of the Confusion Matrix? Note: Specificity is the proportion of actual negative cases which are correctly identified. Saved Response Unsaved Response Info Item 0.70 0.80 0.75 Quiz Status Page 1 Saved 0.78Explanation / Answer
Hi,
From confusion matrix,
Accuracy= True positive+True negative/(True +ve+True -ve+False +ve +False -ve) = 70 + 80 /(70+80+20+300) = 0.75
sensitivity/recall=true positive/true positve+false negative = 70/(70+30) =0.7
specificity=True negative/ true negative+false positive = 80/(80+20) = 0.80
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