Which of the following statements a), b) or c) is false?
A) Because the Iris dataset is labeled, we can look at its target array values to get a sense of how well the k-means algorithm clustered the samples for the three Iris species.
B) In the Iris dataset, the first 50 samples are Iris setosa, the next 50 are Iris versicolor, and the last 50 are Iris virginica.
C) If the KMeans estimator chose the Iris dataset clusters perfectly, then each group of 50 elements in the estimator's labels_ array should have mostly the same label.
D) All of the above statements are true.

Question

Quizplus · Accepted Answer

Statement C is false because k-means is an unsupervised learning algorithm, so it does not use the labeled target array to make clusters. The estimator's labels_ array is generated based on the algorithm's clustering, not the actual species labels in the dataset. Therefore, each group of 50 elements in the labels_ array may not have mostly the same label even if the clustering is good. Statements A and B are true.

Which of the Following Statements A), B) or C) Is