R Programming for Statistics and Data Science - Sampling Data with the Dplyr Package

R Programming for Statistics and Data Science - Sampling Data with the Dplyr Package

Assessment

Interactive Video

Computers

10th - 12th Grade

Hard

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The video tutorial introduces the deep player package, focusing on its sample functions: Sample_N and Sample_frack. Sample_N allows for random sampling of a fixed number of rows, while Sample_frack samples a fixed fraction of the dataset. The tutorial also covers sampling with replacement, known as bootstrapping, which is useful for deriving standard errors and confidence intervals. The session concludes with a preview of the next lesson on the pipe operator, which simplifies combining multiple operations.

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5 questions

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1.

OPEN ENDED QUESTION

3 mins • 1 pt

What is the purpose of the Sample_N function in the Deep Player package?

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2.

OPEN ENDED QUESTION

3 mins • 1 pt

Explain the difference between sample_frack and Sample_N.

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3.

OPEN ENDED QUESTION

3 mins • 1 pt

What does the Sample command return when executed?

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4.

OPEN ENDED QUESTION

3 mins • 1 pt

What is bootstrapping in the context of sampling?

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5.

OPEN ENDED QUESTION

3 mins • 1 pt

How does the pipe operator change the way operations are performed?

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