Databricks Exam Databricks-Certified-Professional-Data-Scientist Topic 4 Question 18 Discussion

Actual exam question for Databricks's Databricks Certified Professional Data Scientist Exam exam

Question #: 18
Topic #: 4

[All Databricks Certified Professional Data Scientist Exam Questions]

Consider the following confusion matrix for a data set with 600 out of 11,100 instances positive:

In this case, Precision = 50%, Recall = 83%, Specificity = 95%, and Accuracy = 95%.

Select the correct statement

APrecision is low, which means the classifier is predicting positives best

BPrecision is low, which means the classifier is predicting positives poorly

Cproblem domain has a major impact on the measures that should be used to evaluate a classifier within it

D1 and 3

E2 and 3
In this case, Precision = 50%, Recall = 83%, Specificity = 95%: and Accuracy = 95%. In this case, Precision is low, which means the classifier is predicting positives poorly. However, the three other measures seem to suggest that this is a good classifier. This just goes to show that the problem domain has a major impact on the measures that should be used to evaluate a classifier within it, and that looking at the 4 simple cases presented is not sufficient.

Show Suggested Answer

Suggested Answer: E

by Malcolm at May 06, 2022, 03:18 AM

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