Data Science Questions and Answers – NumPy – 2

This set of Data Science online test focuses on “NumPy – 2”.

1. Which of the following sets the size of the buffer used in ufuncs?
a) bufsize(size)
b) setsize(size)
c) setbufsize(size)
d) all of the mentioned
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2. Point out the wrong statement.
a) A universal function is a function that operates on ndarrays in an element-by-element fashion
b) In Numpy, universal functions are instances of the numpy.ufunction class
c) Many of the built-in functions are implemented in compiled C code
d) All of the mentioned
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3. Which of the following attribute should be used while checking for type combination input and output?
a) .types
b) .type
c) .class
d) all of the mentioned
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4. Which of the following returns an array of ones with the same shape and type as a given array?
a) all_like
b) ones_like
c) one_alike
d) all of the mentioned
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5. Point out the wrong statement.
a) Each universal function takes array inputs and produces array outputs
b) Broadcasting is used throughout NumPy to decide how to handle disparately shaped arrays
c) The output of the ufunc is necessarily an ndarray, if all input arguments are ndarrays
d) All of the mentioned
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6. Which of the following set the floating-point error callback function or log object?
a) setter
b) settercall
c) setterstack
d) all of the mentioned
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7. Some ufuncs can take output arguments.
a) True
b) False
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8. ___________ decompose the elements of x into mantissa and twos exponent.
a) trunc
b) fmod
c) frexp
d) ldexp
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9. Which of the following function take only single value as input?
a) iscomplex
b) minimum
c) fmin
d) all of the mentioned
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10. The array object returned by __array_prepare__ is passed to the ufunc for computation.
a) True
b) False
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