MCQs

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Overall MCQs for Reference

Which of the following can be used as data in Pandas?
a. Python dict
b. ndarray
c. Scalar value
d. All of the mentioned
Answer: d. All of the mentionedsanfoundry
Pandas is mainly used for?
a. Data analysis
b. Web development
c. Game development
d. Image processing
Answer: a. Data analysisincludehelp
Which of the following is the primary data structure for one-dimensional labeled data in Pandas?
a. DataFrame
b. Series
c. Array
d. List
Answer: b. Seriesclcoding
What does PANDAS stand for?
a. Panel Data Analysis
b. Panel Data analyst
c. Panel Data
d. Panel Dashboard
Answer: a. Panel Data Analysiscsiplearninghub
Pandas Series is equivalent to what in a spreadsheet?
a. Column
b. Cell
c. Table
d. None of the above
Answer: a. Columncsiplearninghub
Which attribute is used to give user-defined labels in Series?
a. index
b. data
c. values
d. None of the above
Answer: a. indexcsiplearninghub
Which of the following libraries allows manipulation and transformation of data efficiently?
a. Pandas
b. NumPy
c. Matplotlib
d. All of the above
Answer: d. All of the abovescribd
What property assigns a name to the Series?
a. name
b. index.name
c. size
d. Series.name
Answer: a. namecsiplearninghub
S1.values will return all the values of Series S1 in:
a. Tuple
b. Dictionary
c. List
d. String
Answer: c. Listcsiplearninghub
Which method displays the first five values of a Series?
a. S1.head()
b. S1.head(5)
c. Both of the above
d. None of the above
Answer: c. Both of the abovecsiplearninghub
Mathematical operations on two Series objects are done by matching:
a. indexes
b. values
c. Both of the above
d. None of the above
Answer: a. indexescsiplearninghub
To display values more than 40 from Series S1:
a. >>> S1
b. >>> S1 > 40
c. >>> S1[S1 > 40]
d. None of the above
Answer: c. >>> S1[S1 > 40]csiplearninghub
Statement to return 10 values from the end of Series S1:
a. S1.tail()
b. S1.tail(10)
c. S1.head(10)
d. S1(10)
Answer: b. S1.tail(10)csiplearninghub
Valid operations on Series S1:
a. >>> S1 + 2
b. >>> S1 ** 2
c. >>> S1 * 2
d. All of the above
Answer: d. All of the abovecsiplearninghub
Can there be duplicate indexes in Series?
a. True
b. False
c. Not sure
d. None of the above
Answer: a. Truecsiplearninghub
Index value of 31 in S1=pd.Series(, index = [‘a’,’b’,’c’,’d’]):sanfoundry+2
a. ‘c’
b. 2
c. Both of the above
d. None of the above
Answer: a. ‘c’csiplearninghub
Which library helps to visualize data?
a. Pandas
b. Numpy
c. Matplotlib
d. Random
Answer: c. Matplotlibcsiplearninghub
Which is a high-level data manipulation tool?
a. Numpy
b. Pandas
c. Matplotlib
d. Math
Answer: b. Pandascsiplearninghub
Pandas is the ______ library.
a. Freeware
b. Proprietary
c. Open source
d. End source
Answer: c. Open sourcecsiplearninghub
Pandas Series is size _______ and value _______
a. Mutable, Mutable
b. Immutable, Immutable
c. Immutable, Mutable
d. Mutable, Immutable
Answer: c. Immutable, Mutablecsiplearninghub
What does the ‘describe()’ method do in Pandas?
a. Gives summary statistics
b. Describes data types
c. Shows first n rows
d. None of the above
Answer: a. Gives summary statisticsincludehelp
Which method is used to read a CSV file in Pandas?
a. read_csv
b. open_csv
c. csv_read
d. None of the above
Answer: a. read_csvtechtipnow
The default axis for DataFrame operations is:
a. 0
b. 1
c. -1
d. None
Answer: a. 0includehelp
Function to check for missing values?
a. isnull()
b. isna()
c. na()
d. Both a and b
Answer: d. Both a and bstudyopedia
Which statement removes duplicates?
a. drop_duplicates()
b. remove_dup()
c. delete_dup()
d. None of the above
Answer: a. drop_duplicates()techtipnow
DataFrame is:
a. 1-dimensional
b. 2-dimensional
c. 3-dimensional
d. None
Answer: b. 2-dimensionalincludehelp
What is the output of S1=pd.Series(); print(S1)?w3schools+3
a. 1
b. 2
c. 3
d. 4
Answer: c. 3csiplearninghub
Which of these joins can be performed in Pandas?
a. Inner
b. Left
c. Right
d. All of the above
Answer: d. All of the abovestudyopedia
Which method shows info on DataFrame columns, data types, non-null values?
a. info()
b. describe()
c. columns()
d. None
Answer: a. info()includehelp
Which method gets random samples from a DataFrame?
a. sample()
b. rand()
c. random()
d. None
Answer: a. sample()techtipnow
Default axis for drop() in DataFrame is:
a. 0
b. 1
c. -1
d. None
Answer: a. 0techtipnow
head() function of DataFrame by default shows how many rows?
a. 3
b. 4
c. 5
d. 10
Answer: c. 5cdnbbsr.s3waas
Which method is used to reset index of a DataFrame?
a. reset_index()
b. set_index()
c. drop_index()
d. None
Answer: a. reset_index()includehelp
Fillna() is used for:
a. Dropping missing values
b. Filling missing values
c. Creating new columns
d. None
Answer: b. Filling missing valuesstudyopedia
Which of the following is not a valid attribute of Series?
a. values
b. index
c. columns
d. name
Answer: c. columnsincludehelp
iloc[] is used for:
a. Label-based indexing
b. Integer location-based indexing
c. String searching
d. None
Answer: b. Integer location-based indexingstudyopedia
loc[] is used for:
a. Integer location-based indexing
b. Label-based indexing
c. Data type conversion
d. None
Answer: b. Label-based indexingstudyopedia
Which method concatenates pandas objects?
a. concat()
b. merge()
c. join()
d. combine()
Answer: a. concat()includehelp
Which function sorts Series or DataFrame by index?
a. sort_index()
b. sort_values()
c. order_by()
d. None
Answer: a. sort_index()studyopedia
Which method is used to visualize data directly in Pandas?
a. plot()
b. show()
c. visualize()
d. None
Answer: a. plot()csiplearninghub
Which function converts DataFrame to numpy array?
a. as_matrix()
b. to_numpy()
c. ndarray()
d. None
Answer: b. to_numpy()csiplearninghub
Which method changes the column names of DataFrame?
a. rename()
b. set_columns()
c. modify_columns()
d. None
Answer: a. rename()csiplearninghub
The axis=1 parameter works on:
a. Rows
b. Columns
c. Both rows and columns
d. None
Answer: b. Columnssanfoundry
Which function can be used to group data in DataFrame?
a. groupby()
b. split()
c. summarize()
d. None
Answer: a. groupby()includehelp
In Pandas, DataFrame columns can be accessed using:
a. Dot notation
b. Bracket notation
c. Both dot and bracket
d. None
Answer: c. Both dot and brackettechtipnow
What does DataFrame.T do?
a. Deletes DataFrame
b. Transposes DataFrame
c. Times DataFrame
d. None
Answer: b. Transposes DataFrametechtipnow
Which parameter in read_csv() controls how missing values are represented?
a. na_values
b. missing
c. empty
d. None
Answer: a. na_valuesincludehelp
What does DataFrame.shape return?
a. Size
b. Dimensions (rows, columns)
c. Column names
d. None
Answer: b. Dimensions (rows, columns)includehelp
What method is used to save DataFrame to CSV?
a. to_csv()
b. save_csv()
c. export_csv()
d. None
Answer: a. to_csv()techtipnow
Pandas is written in which language?
a. Java
b. C++
c. Python
d. JavaScript
Answer: c. Pythonincludehelp

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