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Which chart type is intended to display correlations between sets of numeric data?
Which chart type is intended to display correlations between sets of numeric data?A . ScatterplotB . HistogramC . Pie chartD . Line ChartView AnswerAnswer: A
What is the approach for loading data into the analytical sandbox for this analysis?
Assume you are performing an analysis to determine fraud detection on credit card usage. You will need to ensure higher-risk transactions. These may indicate that fraudulent credit card activity is retained in your data for analysis and not dropped as outliers during pre- processing. What is the approach for loading...
For each employee_id, what is returned as result_1?
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 . Three year rolling average salaryB . Four year rolling...
What does the R code z <- f[1:10, ] do?
What does the R code z <- f[1:10, ] do?A . Assigns the first 10 rows of f to the vector zB . Assigns the 1st 10 columns of the 1st row of f to zC . Assigns a sequence of values from 1 to 10 to zD . Assigns...
How would you proceed, based on this distribution?
Refer to the exhibit. You have plotted the distribution of savings account sizes for your bank. How would you proceed, based on this distribution?A . The data is extremely skewed. Replot the data on a logarithmic scale to get a better sense of it.B . The data is extremely skewed,...
What is a possible reason the coefficient for variable B was negative and not positive?
Variable D is not significantly impacting the dependent variable. After seeing your findings, the majority of your team agreed that variable B should be positively impacting the dependent variable. What is a possible reason the coefficient for variable B was negative and not positive?A . Variable B is interacting with...
Which word or phrase completes the statement; “A theater actor is to ‘artistic and expressive’ as a data scientist is to.”?
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 . Independent and intelligentView AnswerAnswer: A
Which word or phrase completes the statement? Structured data is to OLAP data as quasi- structured data is to
Which word or phrase completes the statement? Structured data is to OLAP data as quasi- structured data is toA . Clickstream dataB . XML dataC . Text documentsD . Image filesView AnswerAnswer: A
What is the most appropriate model to use?
A data scientist plans to classify the sentiment polarity of 10, 000 product reviews collected from the Internet. What is the most appropriate model to use? Suppose labeled training data is available.A . Naïve Bayesian classifierB . Linear regressionC . Logistic regressionD . K-means clusteringView AnswerAnswer: A
If distributed Item-based Collaborative Filtering is an algorithm supported by Mahout, what is the use case category of the algorithm?
If distributed Item-based Collaborative Filtering is an algorithm supported by Mahout, what is the use case category of the algorithm?A . ClassificationB . RecommendersC . Frequent ItemsetD . ClusteringView AnswerAnswer: B
