Which of the following statements is false?
A) Each centroid in the KMeans object's cluster_centers_ array has the same number of features as the original dataset (four in the case of the Iris dataset).
B) To plot the centroids in two-dimensions, you must reduce their dimensions.
C) You can think of a centroid as the "median" sample in its cluster.
D) Each centroid should be transformed using the same PCA estimator used to reduce the other samples in that cluster

Question

Which of the following statements is false?
A) Each centroid in the KMeans object's cluster_centers_ array has the same number of features as the original dataset (four in the case of the Iris dataset). 
B) To plot the centroids in two-dimensions, you must reduce their dimensions.
C) You can think of a centroid as the "median" sample in its cluster.
D) Each centroid should be transformed using the same PCA estimator used to reduce the other samples in that cluster

Quizplus · Accepted Answer

Centroids are considered the "mean" (average) of all the samples in their cluster, not the "median." The median refers to the middle value in a sorted list of numbers, whereas the mean is the average value, which is how centroids are calculated in KMeans clustering.

Which of the Following Statements Is False