Online Access Free 70-773 Exam Questions

You have a dataset.
You need to repeatedly split randomly the dataset so that 80 percent of the data is used as a training set and the remaining 20 percent is used as a test set.
Which method should you use?

• A.pruning
• B.binary classification
• C.imputation
• D.threshold
• E.cross validation

Note: This question is part of a series of questions that use the same or similar answer choices. An answer choice may be correct for more than one question in the series. Each question is independent of the other questions in this series. Information and details provided in a question apply only to that question.
You need to generate a residual based on two columns. The solution must build a trend indicator.
Which function should you use?

• A.rxDataStep
• B.rxLogit
• C.rxTransform
• D.stepAic
• E.rxLinMod
• F.rxPredict
• G.summary
• H.rxTweedie

You have a dataset that has a character variable.
You need to create a bag of counts of n-grams.
Which function should you use?

• A.concat()
• B.categorical()
• C.categoricalHash()
• D.featurizeText()
• E.selectFeatures()

You plan to read data from an Oracle database table and to store the data in the file system for later processing by dplyrXdf. The size of the data is larger than the memory on the server to be used for modelling.
You need to ensure that the data can be processed by dplyrXdf in the least amount of time possible.
How should you transfer the data from the Oracle database?

• A.Define a data source to the Oracle database server by using RxOdbcData, and then use rxImport to save the data to an XDF file.
• B.Use the RODBC library, connect to the Oracle database server by using odbcConnect, and then use rxDataStep to export the data to a comma-separated values (CSV) file.
• C.Use the RODBC library, connect to the Oracle database server by using odbcConnect, and then use rxSplit to save the data to multiple comma-separated values (CSV) file.
• D.Define a data source to the Oracle database server by using RxOdbcData. Use rxImport to save the data to a comma-separated values (CSV) file.

Note: This question is part of a series of questions that use the same or similar answer choices. An answer choice may be correct for more than one question in the series. Each question is independent of the other questions in this series. Information and details provided in a question apply only to that question.
You have a dataset that contains the physical characteristics of people.
You need to visualize a relationship between height and weight for a subset of observations in the dataset.
What should you use?

• A.the rxCube function
• B.the Describe package
• C.the summary function
• D.the rxSummary function
• E.the rxHistogram function
• F.the rxCrossTabs function
• G.the ggplot2 package
• H.the rxQuantile function