True/False Exercise - Numpy

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| By Aparnasunil75
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Aparnasunil75
Community Contributor
Quizzes Created: 20 | Total Attempts: 42,903
| Attempts: 445
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  • 1/10 Questions

    Concatenation means joining two or more arrays.-

    • True
    • False
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About This Quiz

This True\/False quiz tests knowledge on NumPy, focusing on ndarray characteristics, array operations, and data manipulation techniques.

True/False Exercise - Numpy - Quiz

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  • 2. 

    By default, numpy does sorting in descending order.

    • True

    • False

    Correct Answer
    A. False
    Explanation
    By default, numpy does sorting in ascending order, not descending order.

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  • 3. 

    Full form of .CSV is comma separated values

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The given correct answer is true because the full form of .CSV is indeed "comma separated values". This file format is commonly used to store tabular data, where each value is separated by a comma. It allows for easy exchange of data between different software applications, making it widely used in data analysis and database management.

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  • 4. 

    In 2D array, when axis=0, sorting is done column-wise.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    When axis=0 in a 2D array, sorting is done column-wise. This means that the elements in each column of the array will be arranged in ascending or descending order, while the elements in each row will remain in their original order. Therefore, the statement "True" is correct.

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  • 5. 

    In 2D array,by default, sorting is done row-wise(i.e. on axis=1)-

    • True

    • False

    Correct Answer
    A. True
    Explanation
    In a 2D array, by default, sorting is done row-wise. This means that when sorting the elements of the array, the sorting algorithm will consider each row as a separate entity and sort the elements within each row individually. This is indicated by setting the value of the axis parameter to 1. Therefore, the given statement "True" is correct.

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  • 6. 

    Ndarray.dataitem Size is the buffer containing the actual elements of the array.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The explanation for the given correct answer is that ndarray.dataitem Size refers to the buffer that holds the actual elements of the array. This buffer contains the data that can be accessed and manipulated using various array operations. Therefore, it is true that ndarray.dataitem Size is the buffer containing the actual elements of the array.

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  • 7. 

    Ndarray is also known as the alias array

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The statement is true because ndarray is indeed an alias for array. The term "alias" means that ndarray is another name or alternative way to refer to the same thing as array. Therefore, both terms can be used interchangeably to refer to the same data structure.

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  • 8. 

    For element-wise operations on 2D array, size of both arrays may not be  same

    • True

    • False

    Correct Answer
    A. False
    Explanation
    For element-wise operations on 2D arrays, the size of both arrays must be the same. This is because element-wise operations involve performing the operation between corresponding elements of the arrays. If the arrays have different sizes, it would not be possible to perform the operation for all elements, resulting in an error. Therefore, the statement "size of both arrays may not be the same" is false.

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  • 9. 

    Sorting is to arrange the elements of an array in hierarchical order only in ascending

    • True

    • False

    Correct Answer
    A. False
    Explanation
    The statement is incorrect because sorting can arrange the elements of an array in either ascending or descending order, depending on the requirement. It is not limited to arranging the elements only in ascending order. Therefore, the correct answer is False.

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  • 10. 

    Transposing an array turns its rows into columns and rows into rows

    • True

    • False

    Correct Answer
    A. False
    Explanation
    Transposing an array turns its rows into columns and columns into rows, not rows into rows. Therefore, the correct answer is False.

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  • Current Version
  • Mar 21, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Mar 30, 2020
    Quiz Created by
    Aparnasunil75
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