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NEW QUESTION # 93
What tasks need to be completed when designing an analytic sandbox?
- A. Discuss with business experts the best ways to join different datasets
- B. Establish the database tables for extract, translate, and load
- C. Define the hardware and Hadoop network requirements
- D. Estimate the size of the dataset and plan for 5-10 times the size
Answer: D
NEW QUESTION # 94
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 = 0, Probability = 4/54
- B. Classification Y = 1, Probability = 4/54
- C. Classification Y = 1, Probability = 1/54
- D. Classification Y = 0, Probability = 1/54
Answer: B
NEW QUESTION # 95
In which lifecycle stage are test and training data sets created?
- A. Data preparation
- B. Discovery
- C. Model planning
- D. Model building
Answer: D
NEW QUESTION # 96
What is a motivation for using a data analytics lifecycle?
- A. Creates a repeatable process
- B. Guarantees a successful project
- C. Explores all possible approaches
- D. Limits the amount of data needed
Answer: A
NEW QUESTION # 97
You are provided with a dataset with the following attributes:
1. Customer ID
2. Gender flag
3. Amount spent in last four quarters
4. Age
5. Number of purchases made in last four quarters
6. Store credit card flag
7. Elite program member flag
Based on the attributes provided, your task is to find an alternate set of rules that helps to define which customers are more or less likely to become "Elite program members".
Which analytical method would produce the desired rule set?
- A. Neural Network
- B. Linear Regression
- C. Decision Tree
- D. Principal Component Analysis
Answer: C
NEW QUESTION # 98
In the Map Reduce framework, what is the purpose of the Map Function?
- A. It processes the input and generates key-value pairs
- B. It sorts the results of the Reduce function
- C. It collects the output of the Reduce function
- D. It breaks the input into smaller components and distributes to other nodes in the cluster
Answer: A
NEW QUESTION # 99
What describes a true limitation of a Logistic Regression method?
- A. Does not have explanatory values
- B. Does not handle redundant variables well
- C. Does not handle missing values well
- D. Does not handle correlated variables well
Answer: C
NEW QUESTION # 100
On analyzing your time series data you suspect that the data represented as y1, y2, y3, ... , yn-1, yn may have a trend component that is quadratic in nature.
Which pattern of data will indicate that the trend in the time series data is quadratic in nature?
- A. (y2-y1) = (y3-y2) = ....... = (yn-yn-1)
- B. (y3-y2) - (y2-y1) = .........= (yn-yn-1)-(yn-1-yn-2)
- C. (y4-y2) - (y3-y1) = .........= (yn-yn-2)-(yn-1-yn-3)
- D. ((y2-y1) /y1 ) * 100% = .......((yn-yn-1)/yn-1) * 100%
Answer: B
NEW QUESTION # 101
Consider the following SQL statement:
SELECT employee_id, year, salary, avg(salary)
OVER
(PARTITION BY employee_id ORDER BY year ROWS BETWEEN 2 PRECEDING AND CURRENT ROW) as result_1 FROM employee ORDER BY employee_id, year For each employee_id, what is returned as result_1?
- A. Four year rolling average salary
- B. Average employee_id
- C. Three year rolling average salary
- D. Average salary across all employee_id values
Answer: C
NEW QUESTION # 102
What describes the data repository represented by the 'A' in MAD?
- A. Allows analysts to easily ingest, digest, produce, and adapt data at a rapid pace
- B. Attracts all data sources that occur within an organization, regardless of data quality
- C. Enables analysts to study very large datasets without being limited to samples and extracts
- D. Centrally managed and based on long-range, careful design, planning and governance
Answer: A
NEW QUESTION # 103
In which phase of the data analytics lifecycle do Data Scientists spend the most time in a project?
- A. Discovery
- B. Data Preparation
- C. Communicate Results
- D. Model Building
Answer: B
NEW QUESTION # 104
Which type of numeric value does a logistic regression model estimate?
- A. Any integer
- B. Probability
- C. Any real number
- D. A p-value
Answer: B
NEW QUESTION # 105
Refer to the Exhibit.
You are working on creating an OLAP query that outputs several rows of with summary rows of subtotals and grand totals in addition to regular rows that may contain NULL as shown in the exhibit.
Which function can you use in your query to distinguish the row from a regular row to a subtotal row?
- A. RANK
- B. ROLLUP
- C. GROUP_ID
- D. GROUPING
Answer: D
NEW QUESTION # 106
Which method is used to solve for coefficients b0, b1, .., bn in your linear regression model: Y = b0 + b1x1+b2x2+....+bnxn
- A. Apriori Algorithm
- B. Ordinary Least squares
- C. Integer programming
- D. Ridge and Lasso
Answer: B
NEW QUESTION # 107
A study was run to identify general dietary patterns among the residents of a small town. Twelve thousand people were surveyed and the data was subject to K-means clustering.
In one of the iterations, there were six clusters formed with 38, 1560, 1799, 2560, 2893, and 3150 respondents.
What should be the next step in identifying optimal clusters?
- A. Add more categorical variables to the dataset to maximize the Within Sum of Squares (WSS) value for K=6
- B. Remove 38 respondents because the 5 clusters seem to be well distributed
- C. Multiply each variable by its standard deviation
- D. Determine the optimal number of clusters by plotting the Within Sum of Squares (WSS) values as a function of K
Answer: D
NEW QUESTION # 108
Which analytic technique would be appropriate to estimate blood pressure based on age and weight?
- A. K-means clustering
- B. Time series analysis
- C. Naïve Bayesian classification
- D. Linear regression
Answer: D
NEW QUESTION # 109
Which clause is required by all window functions?
- A. RANGE()
- B. PARTITION BY
- C. ORDER BY
- D. OVER()
Answer: D
NEW QUESTION # 110
Refer to the Exhibit.
You are going into a meeting where you anticipate your manager will have a question on your dataset.
Specifically, your manager will want to know about customers that are classified as renters with a good credit status.
In order to prepare for the meeting, you create a rule: RENTER => GOOD CREDIT.
What is the confidence of this rule?
- A. 18%
- B. 41%
- C. 63%
- D. 73%
Answer: C
NEW QUESTION # 111
An analyst is searching a corpus of documents for the topic "solid state disk". As shown in the graphic, Table A provides the inverse document frequency for each term across the corpus.
Table B provides each term's frequency in four documents selected from the corpus.
Based on the four documents, which document is most relevant to the analyst's search?
- A. Document A
- B. Document B
- C. Document C
- D. Document D
Answer: D
NEW QUESTION # 112
What type of data is represented in the exhibit?
- A. Unstructured
- B. Quasi-structured
- C. Semi-structured
- D. Structured
Answer: D
NEW QUESTION # 113
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 a strong background in data flow languages and programming.
Which query interface would you recommend?
- A. Hive
- B. Pig
- C. HBase
- D. Howl
Answer: B
NEW QUESTION # 114
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