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Google Advanced Data Analytics Professional Certificate • STUDY MODE

TEST YOUR KNOWLEDGE: EXPLORE UNSUPERVISED LEARNING AND K-MEANS

QUESTION 1 OF 3

Fill in the blank: K-means is an unsupervised partitioning algorithm used to organize _____ data into clusters.

A
UnlabeledCorrect Answer
B
hierarchical
C
subcategorized
D
presorted
Explanation:

K-means is an unsupervised partitioning algorithm used to organize unlabeled data into clusters. It does this by creating a logical scheme to make sense of the data.

QUESTION 2 OF 3

In k-means, what term describes the point at which each cluster is defined?

A
Commonality
B
CoreCorrect Answer
C
Centroid
D
Coordinate
Explanation:

In k-means, the centroid is the point at which each cluster is defined. Its position represents the center of the cluster, also known as the mathematical mean.

QUESTION 3 OF 3

A data professional is repeating certain tasks that will enable them to create a k-means model. They continue doing this until the algorithm converges. Which step of the model-building process does this scenario represent?

A
Step three
B
Step two
C
Step fourCorrect Answer
D
Step one
Explanation:

Step four involves repeating steps two and three until the algorithm converges.

Ready to test your recall?

Fill in the blank: K-means is an unsupervised partitioning algorithm used to organize _____ data into clusters.

A
Unlabeled
B
hierarchical
C
subcategorized
D
presorted

How confident are you in this answer?