Confusion Matrix Quiz

Confusion Matrix Quiz

Instructions:

  • Number of questions: 10
  • Time limit: 5 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

A confusion matrix is used for classification tasks where the output of the algorithm is in ……. class/classes

2 / 10

Machine learning classification metrics like “Accuracy” give ___ useful information.

3 / 10

High entropy means that the partitions in classification are

4 / 10

We have a data-set where we are predicting number of people who have more than $1000 in their bank account. Consider a data-set with 200 observations i.e. n=200

from the above matrix

5 / 10

The confusion matrix visualizes the ____ of a classifier by comparing the actual and predicted classes.

6 / 10

From  the above Table

7 / 10

We have a test dataset of 10 records with expected outcomes and a set of predictions from our classification algorithm.

No#ExpectedPredicted
1Man,Woman
2Man,Man
3Woman,Woman
4Man,Man
5Woman,Man
6Woman,Woman
7Woman,Woman
8Man,Man
9ManWoman
10Woman,Woman

men classified as men?

8 / 10

The confusion matrix is used when there are two or more classes as the output of the classifier.

9 / 10

Classification accuracy alone can be misleading if you have ________ number of observations in each class.

10 / 10

Suppose we would like to convert a nominal attribute X with 4 values to a data table with only binary variables. How many new attributes are needed?

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