Updated PDF (New 2024) Actual EMC D-DS-FN-23 Exam Questions
Verified D-DS-FN-23 Exam Dumps PDF [2024] Access using TrainingQuiz
NEW QUESTION # 62
The graphic shows the values for the input Boolean attributes "A", "B", and "C". In addition, the graphic shows the values for the output attribute "class".
Which Decision Tree is valid for the data?
- A. Tree C
- B. Tree B
- C. Tree A
- D. Tree D
Answer: B
NEW QUESTION # 63
You are using MADlib for Linear Regression analysis.
Which value does the statement return?
SELECT (linregr(depvar, indepvar)).r2 FROM zeta1;
- A. Coefficients
- B. Goodness of fit
- C. P-value
- D. Standard error
Answer: B
NEW QUESTION # 64
Refer to the exhibit, which shows pairwise counts for items purchased together.
Consider the following association rules:
- Milk -> Eggs
- Eggs -> Milk
- Bread -> Milk
- Milk -> Bread
Which rule has a confidence higher than 70%?
- A. Bread -> Milk
- B. Eggs -> Milk
- C. Milk -> Eggs
- D. Milk -> Bread
Answer: B
NEW QUESTION # 65
When is a Wilcoxon Rank-Sum test used?
- A. When the data can be easily sorted
- B. When an assumption about the distribution of the populations cannot be made
- C. When the data cannot be easily sorted
- D. When the populations represent the sums of other values
Answer: B
NEW QUESTION # 66
In a fitted ARIMA(1,2,3) model, how many differences are applied?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: C
NEW QUESTION # 67
Refer to the exhibit.
Which type of data issue would you suspect based on the exhibit?
- A. Incomplete data, indicating potential issues with data transmission
- B. "Saturated" data, indicating potential issues with data definitions
- C. Mis-scaled data, indicating potential issues with data entry
- D. The exhibit does not raise any obvious concerns with the data.
Answer: B
NEW QUESTION # 68
Based on the exhibit, what is a likely issue with the data?
- A. Mis-scaled data; indicating potential issues with data entry
- B. Saturated data; indicating potential issues with data definitions
- C. Incomplete data; indicating potential issues with data transmission
- D. No obvious concerns with the data is visible
Answer: B
NEW QUESTION # 69
Which assumption makes the Naïve Bayesian classifier different from the general Bayesian model?
- A. Number of features cannot be greater than the number of records
- B. All variables need to be numeric
- C. Fewer features can be used with the Naïve Bayes classifier
- D. Features of a class are conditionally independent of one another
Answer: D
NEW QUESTION # 70
You are provided with the following list.
Which window function is missing?
cume_dist()
dense_rank()
rank()
percent_rank()
first_value()
last_value()
lag()
lead()
ntile()
- A. cumulative_sum()
- B. row_number()
- C. median()
- D. row_preceding()
Answer: B
NEW QUESTION # 71
You have been assigned to do a study of the daily revenue effect of apricing model of online transactions.
When have you completed the analytics lifecycle?
- A. You have a completely developed model, and the results have shown statistically acceptable results.
- B. You have written documentation, and the code has been handed off to the Data Base Administrator and business operations.
- C. You have presented the results of the model to both the internal analytics team and the business owner of the project.
- D. You have a completely developed model based on both a sample of the data and the entire set of data available.
Answer: B
NEW QUESTION # 72
Which component of a final presentation focuses on how to deploy the model?
- A. Recommendations
- B. Executive summary
- C. Approach
- D. Project goals
Answer: A
NEW QUESTION # 73
Refer to the exhibit
Consider the training data set shown in the exhibit.
What are the classification (Y = 0 or 1) and the probability of the classification for the tupleX(0, 0, 1) using Naive Bayesian classifier?
- A. Classification Y = 1, Probability = 1/54
- B. Classification Y = 1, Probability = 4/54
- C. Classification Y = 0, Probability = 4/54
- D. Classification Y = 0, Probability = 1/54
Answer: B
NEW QUESTION # 74
You received 100,000 home loan records and want to quickly determine if there is any correlation between mortgage age and mortgage amount before conducting advanced analysis.
Which tool should be used for the preliminary analysis?
- A. Scatter plot
- B. Stacked Bar chart
- C. Histogram
- D. Box and Whisker plot
Answer: A
NEW QUESTION # 75
What are categorized as data ingestion tools for Hadoop?
- A. Ambari, Oozie, and Zookeeper
- B. Drill, Hive, and HBase
- C. Flume, Sqoop, and Storm
- D. Spark, Tez, and Cassandra
Answer: C
NEW QUESTION # 76
What is the reason for using LOESS?
- A. Fits a smoothed curve to scatterplot data; providing a general idea of the data's behavior
- B. Runs after a one-way ANOVA; determining which population has the highest mean value
- C. Significance test for the correlation between two variables
- D. Plots a continuous variable versus a discrete variable; comparing distributions across classes
Answer: A
NEW QUESTION # 77
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