Assume that are 7 records, 3 with a target of Y=1 and 4 with a target of Y=0. A
ID: 3254390 • Letter: A
Question
Assume that are 7 records, 3 with a target of Y=1 and 4 with a target of Y=0. A models scores that records and calculates the following probabilities that Y=1.
Record A Y=1 Prob(Y=1) = 0.95
Record B Y=1 Prob(Y=1) = 0.85
Record C Y=1 Prob(Y=1) = 0.75
Record W Y=0 Prob(Y=1) = 0.90
Record X Y=0 Prob(Y=1) = 0.80
Record Y Y=0 Prob(Y=1) = 0.75
Record Z Y=0 Prob(Y=1) = 0.60
Referring to the CONCORDANT / DISCORDANT PROBLEM data, exactly how many TOTAL PAIRS of numbers need to be compared?
Explanation / Answer
Compare each predicted value in first dataset with each predicted value in second dataset. Total Number of pairs to compare = x * y x: Number of observations in first dataset (actual values of 1 in dependent variable) y: Number of observations in second dataset (actual values of 0 in dependent variable). So, answer is 3*4 = 12 cases to be compred.