Confusion Matrix

Confusion Matrix

Instructions:

  • Number of questions: 10
  • Time limit: 20 minutes
  • Must be finished in one sitting. You cannot save and finish later.
  • Questions displayed per page: 1
  • Will allow you to go back and change your answers.
  • Will not let you finish with any questions unattempted.

1 / 10

What is the definition of a confusion matrix?

2 / 10

Which option correctly describes using a Confusion Matrix to evaluate a model on a predictive problem?

3 / 10

Please fill in the table below on A, B, C, and D with correct answers:

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4 / 10

In classification problems, the rare class is usually the class of more interested (e.g., the patients who have cancer). In this typical scenario, this rare class is typically designated:

5 / 10

Which metric is commonly used in evaluating classification models?

6 / 10

Confusion matrix is a tabular display of the record counts by their predicted and actual classification status. Which is the structure of a confusion matrix for a binary case?

7 / 10

Which answer is correct in terms of using a confusion matrix for evaluating a model?

8 / 10

According to the table below, which option is incorrect?

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9 / 10

Costco is building a customer counter system at both entry and exit with a computer vision algorithm to restrict the number of customers entering the store due to Covid-19. How would you design a metric to evaluate the model’s performance?

10 / 10

You're building a new attention classifier for Zoom (a cloud platform for video and audio conferencing) because of kids not paying attention during online classes. So you're creating a scoring mechanism. For testing the classifier’s performance, you collected 1000 test records in total. 30 out of 500 tests, the classifier issued a warning (no attention) even when a student is paying attention in a meeting: so, a warning (no attention) was correctly issued 370 times. But 50 out of 500 times, there was no warning when a student was not paying attention. Please fill out a confusion matrix (A to H) below based on the information you collected.

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