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NEW QUESTION # 68
In a user-defined aggregate function, what is SFUNC?
- A. Window function
- B. Final calculation function
- C. State transition function
- D. Segment-level calculation function
Answer: C
NEW QUESTION # 69
What describes the data repository represented by the 'A' in MAD?
- A. Attracts all data sources that occur within an organization, regardless of data quality
- B. Enables analysts to study very large datasets without being limited to samples and extracts
- C. Allows analysts to easily ingest, digest, produce, and adapt data at a rapid pace
- D. Centrally managed and based on long-range, careful design, planning and governance
Answer: C
NEW QUESTION # 70
Refer to the exhibit.
You have run a linear regression model against your data, and have plotted true outcome versus predicted outcome. The R-squared of your model is 0.75.
What is your assessment of the model?
- A. The observations seem to come from two different populations, but this model fits them both equally well.
- B. The R-squared may be biased upwards by the extreme-valued outcomes. Remove them and refit to get a better idea of the model's quality over typical data.
- C. The R-squared is good. The model should perform well.
- D. The extreme-valued outliers may negatively affect the model's performance. Remove them to see if the R-squared improves over typical data.
Answer: B
NEW QUESTION # 71
Which two analytical methods can be used for dealing with categorical variables with a large number of levels?
- A. Naïve Bayesian and Decision Tree
- B. Linear Regression and Association Rules
- C. Logistic Regression and ARMA
- D. Naïve Bayesian and Linear Regression
Answer: A
NEW QUESTION # 72
Your colleague, who is new to Hadoop, approaches you with a question. They want to know how best to access their data. This colleague has previously worked extensively with SQL and databases.
Which query interface would you recommend?
- A. HBase
- B. Hive
- C. Pig
- D. Howl
Answer: B
NEW QUESTION # 73
Refer to the exhibit.
The exhibit shows four graphs labeled as Fig A thorough Fig D.
Which figure represents the entropy function relative to a Boolean classification and is represented by the formula shown in Exhibit?
- A. Fig-B
- B. Fig-D
- C. Fig-C
- D. Fig-A
Answer: D
NEW QUESTION # 74
You are studying the behavior of a population, and you are provided with multidimensional data at the individual level. You have identified four specific individuals who are valuable to your study, and would like to find all users who are most similar to each individual.
Which algorithm is the most appropriate for this study?
- A. K-means clustering
- B. Decision trees
- C. Linear regression
- D. Association rules
Answer: A
NEW QUESTION # 75
What is required in a presentation for business analysts?
- A. Operational process changes
- B. Detailed statistical explanation of the applicable modeling theory
- C. Budgetary considerations and requests
- D. The presentation author's credentials
Answer: A
NEW QUESTION # 76
What is required in a presentation for project sponsors?
- A. The "Big Picture" takeaways for executive level stakeholders
- B. Data warehouse design changes
- C. Detailed statistical basis for the modeling approach used in the project
- D. Line by line review of the developed code
Answer: A
NEW QUESTION # 77
Amajor health care company with 2,500 hospitals acquired a company with 1,500 hospitals. In the year following the company merger, all the health care records have been digitized and loaded into a new centralized data warehouse.
Each individual's health record now includes all doctor's notes and medical images taken. There are currently hundreds of models and reports in production that were built in the original data warehouse.
Since the merger, these models have become outdated and need to be re-evaluated. You have been assigned to update the models that predict the hospital visitation pattern and resource usage of individuals with chronic diseases.
Which steps of the analytic project should be performed in the database?
- A. Model evaluation and A/B testing
- B. Data processing and scoring new individual records in production
- C. Data processing, variable selection, model building and scoring
- D. Model design and bootstrapping for model evaluation
Answer: C
NEW QUESTION # 78
Based on the graphic, what should be done to begin addressing chart junk?
- A. Remove the legend
- B. Remove the vertical gridlines
- C. Reduce the font size in the axis
Answer: B
NEW QUESTION # 79
After which phase of the data analytics lifecycleshould you determine the best way to integrate solutions with production systems?
- A. Discovery
- B. Communicate results
- C. Data preparation
- D. Model planning
Answer: B
NEW QUESTION # 80
Consider the example of an analysis for fraud detection on credit card usage. You will need to ensure higher-risk transactions that may indicate fraudulent credit card activity are retained in your data for analysis, and not dropped as outliers during pre-processing.
What will be your approach for loading data into the analytical sandbox for this analysis?
- A. EDW
- B. ELT
- C. OLTP
- D. ETL
Answer: B
NEW QUESTION # 81
Refer to the exhibit.
Click on the calculator icon in the upper left corner.
You are given a list of predefined association rules:
A) RENTER => BAD CREDIT
B) RENTER => GOOD CREDIT
C) HOME OWNER => BAD CREDIT
D) HOME OWNER => GOOD CREDIT
E) FREE HOUSING => BAD CREDIT
F) FREE HOUSING => GOOD CREDIT
For your next analysis, you must limit your dataset based on rules with confidence greater than 60%.
Which of the rules will be kept in the analysis?
- A. Rules A and F
- B. Rules D and E
- C. Rules C and E
- D. Rules B and D
Answer: D
NEW QUESTION # 82
You are testing two new weight-gain formulas for puppies. The test gives the results: Control group: 1% weight gain Formula A. 3% weight gain Formula B. 4% weight gain A one-way ANOVA returns a p-value = 0.027
What can you conclude?
- A. Either Formula A or Formula B is effective at promoting weight gain.
- B. Formula A and Formula B are about equally effective at promoting weight gain.
- C. Formula B is more effective at promoting weight gain than Formula A.
- D. Formula A and Formula B are both effective at promoting weight gain.
Answer: A
NEW QUESTION # 83
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