Data science

1. Which of the following reads a data.frame and creates text output referring to the Google Visualization API?

gvisAnnotatedLine
gvisTimeLine
gvisAnnotatedTimeLine
none of the mentioned

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Visualization API?" class="read-more button" href="https://exam.pscnotes.com/mcq/which-of-the-following-reads-a-data-frame-and-creates-text-output-referring-to-the-google-visualization-api/#more-59917">Detailed SolutionWhich of the following reads a data.frame and creates text output referring to the Google Visualization API?

3. Which of the following list-like data structure is used for managing a dynamic collection of SparseArrays?

SparseList
GeoList
SparseSeries
All of the mentioned

Detailed

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SolutionWhich of the following list-like data structure is used for managing a dynamic collection of SparseArrays?

4. ndarray.dataitemSize is the buffer containing the actual elements of the array.

TRUE
nan
nan
nan

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href="https://exam.pscnotes.com/mcq/ndarray-dataitemsize-is-the-buffer-containing-the-actual-elements-of-the-array/#more-59850">Detailed Solutionndarray.dataitemSize is the buffer containing the actual elements of the array.

5. Which of the following testing is concerned with making decisions using data?

Probability
Hypothesis
Causal
None of the mentioned

Detailed SolutionWhich

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of the following testing is concerned with making decisions using data?

6. Point out the correct statement.

findLinearColumns will also return a vector of column positions can be removed to eliminate the linear dependencies
findLinearCombos will return a list that enumerates dependencies
the function findLinearRows can be used to generate a complete set of row variables from one factor
none of the mentioned

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correct statement." class="read-more button" href="https://exam.pscnotes.com/mcq/point-out-the-correct-statement-59/#more-59780">Detailed SolutionPoint out the correct statement.

7. Which of the following object you get after reading CSV file?

DataFrame
Character Vector
Panel
All of the mentioned

Detailed

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SolutionWhich of the following object you get after reading CSV file?

8. Which of the following random variables are the default model for random samples?

iid
id
pmd
all of the mentioned

Detailed

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SolutionWhich of the following random variables are the default model for random samples?

9. Which of the following is an example of raw data?

original swath files generated from a sonar system
initial time-series file of temperature values
a real-time GPS-encoded navigation file
all of the mentioned

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of the following is an example of raw data?" class="read-more button" href="https://exam.pscnotes.com/mcq/which-of-the-following-is-an-example-of-raw-data/#more-59752">Detailed SolutionWhich of the following is an example of raw data?

10. What Python function is used to perform element-wise mathematical operations on Numpy arrays?

describe()
plt.plot()
df.apply()
np.add()

Detailed

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SolutionWhat Python function is used to perform element-wise mathematical operations on Numpy arrays?

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