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NumPy

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Which NumPy function calculates the dot product?
  1. A-np.dot()
  2. B-np.product()
  3. C-np.multiply()
  4. D-np.matmul()
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Which NumPy function creates a random array?
  1. A-np.random()
  2. B-np.random.rand()
  3. C-np.rand()
  4. D-np.random_array()
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Which NumPy function creates a diagonal matrix?
  1. A-np.diagonal()
  2. B-np.diag()
  3. C-np.eye()
  4. D-np.identity()
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Which NumPy function calculates the standard deviation?
  1. A-np.stdev()
  2. B-np.std()
  3. C-np.sd()
  4. D-np.deviation()
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Which NumPy function creates a range of numbers?
  1. A-np.range()
  2. B-np.arange()
  3. C-np.sequence()
  4. D-np.linspace()
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Which NumPy function concatenates arrays?
  1. A-np.join()
  2. B-np.concatenate()
  3. C-np.merge()
  4. D-np.combine()
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Which NumPy function calculates the mean?
  1. A-np.average()
  2. B-np.mean()
  3. C-np.median()
  4. D-np.avg()
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Which NumPy function creates an identity matrix?
  1. A-np.identity()
  2. B-np.eye()
  3. C-np.ones()
  4. D-np.zeros()
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Which NumPy function creates an array of zeros?
  1. A-np.empty()
  2. B-np.zeros()
  3. C-np.ones()
  4. D-np.array()
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Which function stacks arrays horizontally?
  1. A-np.vstack
  2. B-np.hstack
  3. C-np.concatenate
  4. D-np.append
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Which package speeds up NumPy with Intel MKL?
  1. A-numpy-mkl
  2. B-conda numpy
  3. C-pip numpy
  4. D-Numba
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What does the term "TensorFlow Lite" refer to?
  1. A-A simplified version of TensorFlow for educational purposes
  2. B-TensorFlow's library for distributed computing
  3. C-TensorFlow's library for mobile and embedded devices
  4. D-TensorFlow's library for quantum computing
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Which function is used to calculate the Kronecker product of two arrays in NumPy?
  1. A-np.kron()
  2. B-np.dot()
  3. C-np.multiply()
  4. D-np.cross()
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What does the np.where() function with three arguments do in NumPy?
  1. A-Returns the indices of elements that satisfy a condition
  2. B-Replaces elements in an array based on a condition
  3. C-Combines arrays based on a condition
  4. D-Computes the histogram of elements in an array
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Which function is used to compute the correlation matrix of multiple arrays in NumPy?
  1. A-np.corrcoef()
  2. B-np.cov()
  3. C-np.correlate()
  4. D-np.corr()
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What does the np.percentile() function do in NumPy?
  1. A-Computes the median of elements in an array
  2. B-Computes the mean of elements in an array
  3. C-Computes the standard deviation of elements in an array
  4. D-Computes the nth percentile of elements in an array
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Which function is used to calculate the exponential of all elements in an input array in NumPy?
  1. A-np.exp()
  2. B-np.log()
  3. C-np.power()
  4. D-np.sqrt()
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What does the np.linalg.inv() function do in NumPy?
  1. A-Computes the determinant of a matrix
  2. B-Computes the inverse of a matrix
  3. C-Computes the eigenvalues of a matrix
  4. D-Computes the singular value decomposition (SVD) of a matrix
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Which function is used to compute the cumulative product of elements along a specified axis in NumPy?
  1. A-np.prod()
  2. B-np.cumprod()
  3. C-np.mean()
  4. D-np.median()
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What does the np.full() function do in NumPy?
  1. A-Creates an array filled with a specified value
  2. B-Creates an array filled with zeros
  3. C-Creates an array filled with ones
  4. D-Creates an array filled with random values
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Which function is used to compute the standard deviation of elements along a specified axis in NumPy?
  1. A-np.std()
  2. B-np.var()
  3. C-np.mean()
  4. D-np.median()
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What does the np.nan represent in NumPy?
  1. A-Positive infinity
  2. B-Negative infinity
  3. C-Not a Number (NaN)
  4. D-Undefined value
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Which function is used to compute the cross-product of two arrays in NumPy?
  1. A-np.dot()
  2. B-np.matmul()
  3. C-np.multiply()
  4. D-np.cross()
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What does the np.where() function do in NumPy?
  1. A-Reshapes an array
  2. B-Computes the inverse of a matrix
  3. C-Returns the indices of elements that satisfy a condition
  4. D-Computes the dot product of two arrays
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Which function is used to perform element-wise multiplication of two arrays in NumPy?
  1. A-np.dot()
  2. B-np.multiply()
  3. C-np.matmul()
  4. D-np.cross()
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What does the np.concatenate() function do in NumPy?
  1. A-Joins arrays along a specified axis
  2. B-Computes the dot product of two arrays
  3. C-Splits an array into multiple sub-arrays
  4. D-Flattens a multi-dimensional array
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Which function is used to find the indices of the maximum and minimum elements of an array in NumPy?
  1. A-np.argmax() and np.argmin()
  2. B-np.max() and np.min()
  3. C-np.argsort() and np.argpartition()
  4. D-np.where() and np.nonzero()
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What does the np.eye() function do in NumPy?
  1. A-Creates a random array
  2. B-Creates an identity matrix
  3. C-Calculates the dot product of two arrays
  4. D-Reshapes an array
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Which function is used to find the unique elements of an array in NumPy?
  1. A-np.unique()
  2. B-np.sort()
  3. C-np.argmax()
  4. D-np.median()
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What does the np.transpose() function do in NumPy?
  1. A-Flips the array over its diagonal
  2. B-Reverses the order of elements in an array
  3. C-Transposes the array
  4. D-Reshapes the array
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Which function is used to calculate the cumulative sum of elements along a specified axis in NumPy?
  1. A-np.sum()
  2. B-np.cumsum()
  3. C-np.mean()
  4. D-np.max()
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What does the np.zeros() function do in NumPy?
  1. A-Creates an array filled with zeros
  2. B-Creates an array filled with ones
  3. C-Creates an identity matrix
  4. D-Creates a random array
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What does the np.linspace() function do in NumPy?
  1. A-Generates an array of equally spaced numbers over a specified interval
  2. B-Generates an array of random numbers from a uniform distribution
  3. C-Generates an array of random numbers from a normal distribution
  4. D-Generates an array of random integers
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Which function is used to calculate the element-wise remainder of division in NumPy?
  1. A-np.mod()
  2. B-np.remainder()
  3. C-np.divide()
  4. D-np.divmod()
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What does the np.polyfit() function do in NumPy?
  1. A-Fits a polynomial of specified degree to a set of data points
  2. B-Computes the inverse of a polynomial
  3. C-Computes the roots of a polynomial
  4. D-Computes the derivatives of a polynomial
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Which NumPy function is used to calculate the discrete Fourier transform (DFT)?
  1. A-np.fft.fft()
  2. B-np.fft.ifft()
  3. C-np.fft.rfft()
  4. D-np.fft.irfft()
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What does the np.histogram() function in NumPy do?
  1. A-Computes the histogram of a set of data
  2. B-Computes the mean of a set of data
  3. C-Computes the standard deviation of a set of data
  4. D-Computes the median of a set of data
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Which function is used to calculate the Pearson correlation coefficient in NumPy?
  1. A-np.correlate()
  2. B-np.corrcoef()
  3. C-np.cov()
  4. D-np.corr()
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What does the np.vstack() function do in NumPy?
  1. A-Stacks arrays vertically
  2. B-Stacks arrays horizontally
  3. C-Splits an array into multiple sub-arrays vertically
  4. D-Splits an array into multiple sub-arrays horizontally
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Which NumPy function is used to calculate the eigenvalues and eigenvectors of a square matrix?
  1. A-np.linalg.solve()
  2. B-np.linalg.det()
  3. C-np.linalg.eig()
  4. D-np.linalg.inv()
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What does the np.clip() function do in NumPy?
  1. A-Clips values outside a specified range to the range's boundaries
  2. B-Rounds the elements of an array to the nearest integer
  3. C-Calculates the cumulative sum of elements along a specified axis
  4. D-Computes the natural logarithm of the elements of an array
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Which of the following methods is used to calculate the dot product of two arrays in NumPy?
  1. A-np.dot()
  2. B-np.cross()
  3. C-np.inner()
  4. D-np.outer()
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What does the np.random.seed() function in NumPy do?
  1. A-Seeds the random number generator for reproducibility
  2. B-Generates a random seed value
  3. C-Sets the state of the random number generator
  4. D-Resets the random number generator
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What does the np.ravel() function in NumPy do?
  1. A-Flattens a multi-dimensional array into a 1D array
  2. B-Transposes a multi-dimensional array
  3. C-Reshapes a multi-dimensional array
  4. D-Concatenates two arrays along a specified axis
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What is the output of the following NumPy code snippet?

import numpy as np
arr = np.arange(9).reshape(3, 3)
arr_flatten = arr.flatten()
arr_flatten[0] = 99
print(arr)

  1. A-[[0, 1, 2], [3, 4, 5], [6, 7, 8]]
  2. B-[[99, 1, 2], [3, 4, 5], [6, 7, 8]]
  3. C-[[0, 99, 2], [3, 4, 5], [6, 7, 8]]
  4. D-[[0, 1, 2], [3, 4, 5], [6, 7, 99]]
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Which of the following statements is true about NumPy?
  1. A-It is primarily used for string manipulation
  2. B-It is not suitable for mathematical operations
  3. C-It provides efficient numerical arrays and functions for numerical operations
  4. D-It is a graphical user interface library
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What is the output of np.nanmean([1, np.nan, 3])?
  1. A-nan
  2. B-2.0
  3. C-1.5
  4. D-3.0
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What function is used to calculate the mean of an array?
  1. A-np.mean()
  2. B-mean()
  3. C-Both A and B
  4. D-None of the above
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What is the purpose of the np.concatenate() function?
  1. A-To split an array into multiple sub-arrays
  2. B-To join arrays along an existing axis
  3. C-To create an array with evenly spaced values
  4. D-To find the intersection of two arrays
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Which of the following functions is used to find the unique elements of an array?
  1. A-unique()
  2. B-distinct()
  3. C-np.unique()
  4. D-np.distinct()
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What is the output of np.random.randint(1, 10, size=(2, 3))?
  1. A-A 2x3 array with random integers between 1 and 10
  2. B-An array of random floats between 1 and 10
  3. C-A single random integer between 1 and 10
  4. D-An error
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Which function is used to calculate the dot product of two arrays?
  1. A-np.dot()
  2. B-np.cross()
  3. C-np.multiply()
  4. D-np.inner()
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What is the purpose of broadcasting in NumPy?
  1. A-To adjust array dimensions to perform arithmetic operations
  2. B-To increase the speed of array operations
  3. C-To convert arrays into a different data type
  4. D-None of the above
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What is the output of np.eye(3)?
  1. A-Identity matrix of order 3
  2. B-Array of zeros with diagonal ones
  3. C-Array of ones with diagonal zeros
  4. D-Array of ones with all elements zeros
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What function is used to reshape a NumPy array?
  1. A-reshape()
  2. B-resize()
  3. C-Both A and B
  4. D-None of the above
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Which of the following is not a valid data type in NumPy?
  1. A-int32
  2. B-string
  3. C-float64
  4. D-complex128
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What does the dtype attribute of a NumPy array represent?
  1. A-Data type of the array
  2. B-Dimension of the array
  3. C-Shape of the array
  4. D-Size of the array
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Which function is used to find the maximum value in an array?
  1. A-max()
  2. B-maximum()
  3. C-np.max()
  4. D-np.maximum()
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What is the result of np.arange(5)?
  1. A-[0, 1, 2, 3, 4]
  2. B-[1, 2, 3, 4, 5]
  3. C-[0, 1, 2, 3]
  4. D-[1, 2, 3, 4]
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Which function is used to create a new array filled with zeros?
  1. A-zeros()
  2. B-ones()
  3. C-empty()
  4. D-arange()
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What is the main advantage of using NumPy arrays over Python lists?
  1. A-NumPy arrays are resizable
  2. B-NumPy arrays can hold elements of different data types
  3. C-NumPy arrays support vectorized operations
  4. D-NumPy arrays have built-in sorting functions
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Which of the following data structures does NumPy primarily work with?
  1. A-Lists
  2. B-Sets
  3. C-Arrays
  4. D-Dictionaries
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What does NumPy stand for?
  1. A-Numeric Python
  2. B-Numerical Processing
  3. C-Natural Python
  4. D-None of the above
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Which of the following is not a benefit of using NumPy?
  1. A-Efficient computations
  2. B-High-level mathematical functions
  3. C-Large, multi-dimensional arrays and matrices
  4. D-Built-in machine learning algorithms
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What is NumPy?
  1. A-A programming language
  2. B-A numerical computing library
  3. C-A web development framework
  4. D-A database management system
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How can you install NumPy in a Python environment?
  1. A-pip install numpy
  2. B-install numpy
  3. C-np install numpy
  4. D-pip numpy install
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Which NumPy function is used for element-wise exponentiation?
  1. A-np.power()
  2. B-np.exp()
  3. C-np.square()
  4. D-np.log()
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In NumPy, what does the function np.random.rand() do?
  1. A-Generate random integers
  2. B-Generate random floats in the half-open interval [0.0, 1.0)
  3. C-Shuffle elements in an array
  4. D-Create a random matrix
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How can you concatenate two NumPy arrays vertically?
  1. A-np.add()
  2. B-np.concatenate(axis=0)
  3. C-np.vstack()
  4. D-np.merge(vertical=True)
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Which NumPy function is used to find the mean of an array?
  1. A-np.median()
  2. B-np.mean()
  3. C-np.average()
  4. D-np.sum()
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What does the term "broadcasting" refer to in NumPy?
  1. A-Radio broadcasting
  2. B-Simultaneous operation on arrays with different shapes
  3. C-Printing arrays
  4. D-Broadcasting live events
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Which of the following statements about NumPy arrays is correct?
  1. A-NumPy arrays must be of the same data type
  2. B-NumPy arrays cannot have more than one dimension
  3. C-NumPy arrays are only suitable for string data
  4. D-NumPy arrays are not resizable
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What is NumPy used for in Python programming?
  1. A-Web development
  2. B-Machine learning and data manipulation
  3. C-Graphic design
  4. D-Database management
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