A data scientist is asked to implement an article recommendation feature for an on-line magazine. The magazine does not want to use client tracking technologies such as cookies or reading history. Therefore, only the style...
Which word or phrase completes the statement; “A theater actor is to ‘artistic and expressive’ as a data scientist is to ____________.”?A . Communicative and collaborativeB . Introverted and technicalC . Logical and steadfastD ....
Which analytical method is considered unsupervised?A . K-means clusteringB . Naïve Bayesian classifierC . Decision treeD . Linear regressionView AnswerAnswer: A
What describes a true property of Logistic Regression method?A . It is robust with redundant variables and correlated variables.B . It handles missing values well.C . It works well with discrete variables that have many...
How does Pig’s use of a schema differ from that of a traditional RDBMS?A . Pig's schema is optionalB . Pig's schema requires that the data is physically present when the schema is definedC ....
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...
In a Student's t-test, what is the meaning of the p-value?A . Area under the appropriate tails of the student's distributionB . Power of the Student's t-testC . Mean of the distribution for the null...
You are given 10, 000, 000 user profile pages of an online dating site in XML files, and they are stored in HDFS. You are assigned to divide the users into groups based on the...
A business colleague who is new to Hadoop approaches you with a question. The colleague wants to know the best approach to access their data. The colleague has previously worked extensively with SQL and databases....
To ensure a successful analytic project, which key role can consult and advise the project team on the value of end results and how these will be used on a daily basis?A . Business UserB...