최신EMC Dell Data Science Foundations - D-DS-FN-23무료샘플문제
문제1
What is the output of the K-means clustering algorithm?
What is the output of the K-means clustering algorithm?
정답: B
문제2
A decision tree is being built. An internal node is being evaluated for partitioning on variables A and B.
The entropy of the internal node is 0.8. The entropy for each of the variables is as follows:
# Variable A: 0.5
# Variable B: 0.4
Which variable will be used to partition the data and what is the information gain?
A decision tree is being built. An internal node is being evaluated for partitioning on variables A and B.
The entropy of the internal node is 0.8. The entropy for each of the variables is as follows:
# Variable A: 0.5
# Variable B: 0.4
Which variable will be used to partition the data and what is the information gain?
정답: C
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문제3
To ensure a successful analytic project, which key role can provide business domain expertise with a deep understanding of the data and key performance indicators?
To ensure a successful analytic project, which key role can provide business domain expertise with a deep understanding of the data and key performance indicators?
정답: C
문제4
What is the optimal usage scenario for the Hadoop Distributed File System?
What is the optimal usage scenario for the Hadoop Distributed File System?
정답: D
문제5
During a study to understand the population growth of a certain bacterial culture, you plot the data and identify a quadratic growth trend over time.
Which transformation should you apply to linearize the data?
During a study to understand the population growth of a certain bacterial culture, you plot the data and identify a quadratic growth trend over time.
Which transformation should you apply to linearize the data?
정답: C
문제6
When is a Wilcoxon Rank-Sum test used?
When is a Wilcoxon Rank-Sum test used?
정답: D
문제7
You have created a scatterplot of two continuous variables for 2000 records. You want to add a line to the scatterplot to check linearity of the data.
Which function would best address this need?
You have created a scatterplot of two continuous variables for 2000 records. You want to add a line to the scatterplot to check linearity of the data.
Which function would best address this need?
정답: B
문제8
Consider the following text:
"Stop!" he shouted. "Don't go there!"
What set of words result from using a tokenizer for punctuation on the text?
Consider the following text:
"Stop!" he shouted. "Don't go there!"
What set of words result from using a tokenizer for punctuation on the text?
정답: C
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