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Advanced Analytics Specialist Exam for Data Scientists

Last Update Jun 19, 2024
Total Questions : 66

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Advanced Analytics Specialist Exam for Data Scientists Questions and Answers

Questions 1

What is a random subspace of features, as used by Random Forests?



A random subset of features that are chosen at each split in the decision tree


Filtration of data that does not meet a pre-defined weighting thrsehold


The creation of out-of-bag (OOB) data that is used to select features


Removal of highly correlated variables to randomize the features

Questions 2

A hotel chain runs a simul-ation on room pricing. They want to estimate revenue, per hotel, within +/- $10 with 95% confidence (Za/2=1.96). The estimated revenue standard deviation is $5000 based on previous booking data.

What is the optimal number of simulation trials to run?



    A 32-bit operating system was used


    The same number of trials was used


    A linear congruential generator (LCG) was used (or pseudo-random number generation


    Different seeds tor the random number generator were used.

    Questions 3

    You are analyzing written transcripts of focus groups conducted on product X. You approach is to use TF-IDF for your analysis.

    What combination of TF-IDF scores should you examine to ensure you only report on the most important terms?



    High TF score and high DF score


    High TF score and high IDF score


    High TF score and low IDF score


    Low TF score and low DF score