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Refer to the confusion matrix:
An analyst determines that loan defaults occur at the rate of 3% in the overall population. The above confusion matrix is from an oversampled test set (1 = default).
What is the sensitivity adjusted for the population event probability?
Enter your answer in the space below. Round to three decimals (example: n.nnn).
Suggested Answer: A
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12 comments · newest first
LU
Luisa
12 months ago
Totally agree, oversampling can skew results!
VA
Val
12 months ago
Wait, how does oversampling affect sensitivity?
GE
Germaine
1 year ago
Not sure about that, seems a bit high for a 3% default rate.
QU
Quentin
1 year ago
I think the answer is around 0.617, right?
DO
Dorthy
1 year ago
Sensitivity is calculated as true positives / (true positives + false negatives).
MA
Mary
1 year ago
I feel like I might be mixing up sensitivity and specificity. I need to double-check how to calculate sensitivity with the population rate.
RA
Raelene
1 year ago
This reminds me of a practice question where we had to adjust metrics based on class imbalance. I hope I can apply that here.
LA
Lavonne
1 year ago
I remember sensitivity is true positives over the sum of true positives and false negatives, but I'm not sure how to adjust it for the population event probability.
VE
Veronika
1 year ago
I think we might need to consider the prevalence of defaults in the overall population, which is 3%. That could affect the sensitivity calculation.
TI
Timmy
1 year ago
Hmm, I'm a bit unsure about this one. I'll have to think it through carefully. Maybe I should review the material on adaptive time thresholds again.
DO
Dolores
1 year ago
Hmm, this seems like a tricky one. I'll need to think through the different options carefully to identify the three most likely causes.
MA
Maryann
1 year ago
I'm pretty confident the answer is an app registration. That's how you connect an app to Azure AD to access its resources.