D-DS-FN-23 Braindumps Real Exam Updated on Jul 15, 2025 with 300 Questions
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NEW QUESTION # 108
Which of the following is an example of quasi-structured data?
- A. Clickstream data
- B. Customer record table
- C. OLAP
- D. OLTP
Answer: A
NEW QUESTION # 109
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. Eggs -> Milk
- B. Milk -> Bread
- C. Bread -> Milk
- D. Milk -> Eggs
Answer: A
NEW QUESTION # 110
You have plotted the distribution of savings account sizes for a bank.
Based on the distribution shown in the exhibit, how would you proceed?
- A. Data is extremely skewed. Replot the data on a logarithmic scale to get a better understanding of it.
- B. Data is extremely skewed but looks bimodal. Replot the data in the range 2,500 - 10,000 to be certain.
- C. Data is extremely skewed. Split the analysis into two cohorts; accounts less than 2,500 and accounts greater than 2,500.
- D. Accounts of sizes greater than 2,500 are rare and are most likely outliers. Eliminate them from future analysis.
Answer: A
NEW QUESTION # 111
Which activity might be performed in the Operationalize phase of the Data Analytics Lifecycle?
- A. Transform existing variables
- B. Try different variables
- C. Try different analytical techniques
- D. Run a pilot
Answer: D
NEW QUESTION # 112
Which word or phrase completes the statement? Emphasis color is to standard color as _______.
- A. Main message is to key findings
- B. Pie chart is to proportions
- C. Frequent item set is to item
- D. Main message is to context
Answer: D
NEW QUESTION # 113
Which process in text analysis can be used to reduce dimensionality?
- A. Digitizing
- B. Sorting
- C. Parsing
- D. Stemming
Answer: D
NEW QUESTION # 114
How does Pig's use of a schema differ from that of a traditional RDBMS?
- A. Pig's schema is required for ETL
- B. Pig's schema requires that the data is physically present when the schema is defined
- C. Pig's schema is optional
- D. Pig's schema supports a single data type
Answer: C
NEW QUESTION # 115
In a Student's t-test, what is the meaning of the p-value?
- A. it is the mean of the distribution for the alternate hypothesis
- B. it is the area under the appropriate tails of the Student's distribution
- C. it is the "power" of the Student's t-test
- D. it is the mean of the distribution for the null hypothesis
Answer: B
NEW QUESTION # 116
What is the mandatory Clause that must be included when using Window functions?
- A. OVER
- B. RANK
- C. PARTITION BY
- D. RANK BY
Answer: A
NEW QUESTION # 117
You have been assigned to do a study of the daily revenue effect of a pricing model of online transactions.
You have tested all the theoretical models in the previous model planning stage, and all tests have yielded statistically insignificant results.
What is your next step?
- A. Report that the results are insignificant, and reevaluate the original business question.
- B. Move forward on the model with the highest significance scores relative to the others.
- C. Run all the models again against a larger sample, leveraging more historical data.
- D. Modify samples used by the models and iterate until a significant result occurs.
Answer: A
NEW QUESTION # 118
When would you prefer a Naive Bayes model to a logistic regression model for classification?
- A. When you are using several categorical input variables with over 1000 possible values each.
- B. When all the input variables are numerical.
- C. When you need to estimate the probability of an outcome, not just which class it is in.
- D. When some of the input variables might be correlated.
Answer: A
NEW QUESTION # 119
Consider the following text:
"Aren't you glad that there are all these toys. Are you taking any for the children?" What is the term frequency for the word are in the text with both case folding and a tokenizer applied to punctuation?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: C
NEW QUESTION # 120
You have completed your model and are handing it off to be deployed in production.
What should you deliver to the production team, along with your commented code?
- A. The production team supports the processes that run the organization, and they need context to understand how your model interacts with the processes they already support. Give them the same presentation that you prepared for the project sponsor.
- B. The production team supports the processes that run the organization, and they need context to understand how your model interacts with the processes they already support. Give them the executive summary.
- C. The production team needs to understand how your model will interact with the processes they already support. Give them documentation on expected model inputs and outputs, and guidance on error-handling.
- D. The production team are technical, and they need to understand how the processes that they support work, so give them the same presentation that you prepared for the analysts.
Answer: C
NEW QUESTION # 121
Which SQL OLAP grouping extension is used to provide hierarchical groupings without examining all possible combinations?
- A. GROUP_ID
- B. ROLLUP
- C. GROUNPING
- D. CUBE
Answer: B
NEW QUESTION # 122
What is the primary function of the NameNode in Hadoop?
- A. Runs some number of mapping tasks against its assigned data
- B. Acts as a regulator/resolver among clients and DataNodes
- C. Monitors the state of each JobTracker node and signals an event if unavailable
- D. Keeps track of which MapReduce jobs have been assigned to each TaskTracker
Answer: B
NEW QUESTION # 123
What are the characteristics of Big Data?
- A. Data type, processing complexity, and data structure variety.
- B. Data volume, business importance, and data structure variety.
- C. Data volume, processing complexity, and data structure variety.
- D. Data volume, processing complexity, and business importance.
Answer: C
NEW QUESTION # 124
Which data asset is an example of quasi-structured data?
- A. XML data file
- B. News article
- C. Webserver log
- D. Database table
Answer: C
NEW QUESTION # 125
Which key role for a successful analytic project can provide business domain expertise with a deep understanding of the data and key performance indicators?
- A. Business User
- B. Project Manager
- C. Project Sponsor
- D. Business Intelligence Analyst
Answer: D
NEW QUESTION # 126
A data scientist is given an R data frame (i.e., empdata) with the following columns: Age Salary Occupation Education Gender The scientist wants to examine only the Salary and Occupation columns for ages greater than '40'.
Which command extracts the appropriate rows and columns from the data frame?
- A. empdata[, c("Salary","Occupation")]$Age > 40
- B. empdata[empdata$Age > 40, c("Salary","Occupation")]
- C. empdata[c("Salary","Occupation"), empdata$Age > 40]
- D. empdata[Age > 40, ("Salary","Occupation")]
Answer: B
NEW QUESTION # 127
Which key role for a successful analytic project can consult and advise the project team on the value of end results and how these will be used on a day-to-day basis?
- A. Data Scientist
- B. Project Manager
- C. Business Intelligence Analyst
- D. Business User
Answer: D
NEW QUESTION # 128
What describes a true limitation of a Logistic Regression method?
- A. Does not handle missing values well
- B. Does not handle correlated variables well
- C. Does not handle redundant variables well
- D. Does not have explanatory values
Answer: A
NEW QUESTION # 129
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