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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?

Options:

A.

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

B.

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

C.

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

D.

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?

    Options:

    A.

    A 32-bit operating system was used

    B.

    The same number of trials was used

    C.

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

    D.

    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?

    Options:

    A.

    High TF score and high DF score

    B.

    High TF score and high IDF score

    C.

    High TF score and low IDF score

    D.

    Low TF score and low DF score