Question #4 - Reading 4 Big Data Projects

Reading: Reading 4 Big Data Projects

PDF File: Reading 4 Big Data Projects.pdf

Page: 2

Status: Unattempted

Shared Context

- Karlsson is especially concerned about the possibility that her model may indicate that a bond will not default, but then the bond actually defaults. Karlsson decides to use the model's recall to evaluate this possibility. Based on the data in Exhibit 1, the model's recall is closest to: A) 93%. B) 83%. C) 73%.

Question

Karlsson would like to gain a sense of her model's overall performance. In her research, Karlsson learns about the F1 score, which she hopes will provide a useful measure. Based on Exhibit 1, Karlsson's model's F1 score is closest to:

Answer Choices:

A. 82%

B. 92%

C. 72%

Explanation

The model's F1 score, which is the harmonic mean of precision and recall, is calculated as: F1 score = (2 × P × R) / (P + R) = (2 × 0.9083 × 0.9303) / (0.9083 + 0.9303) = 0.9192 (92%) Like accuracy, F1 is a measure of overall performance measures that gives equal weight to FP and FN.

Actions

Practice Flashcards