Unique Items

Question 1

Which numpy function can be used to count the frequency of each unique value in an array?

numpy.count_unique().

numpy.value_counts().

numpy.freq_count().

numpy.bincount().

Question 2

Which numpy function is used to find the unique elements in an array?

numpy.unique().

numpy.find_unique().

numpy.unique_elements().

numpy.distinct().

Question 3

What does the return_counts parameter in numpy.unique() do?

Returns the indices of unique elements.

Returns the count of each unique element.

Returns the unique elements in descending order.

Returns the unique elements in ascending order.

Question 4

How can you find the unique values in a numpy array arr along with their corresponding counts?

numpy.unique(arr, return_counts=True).

numpy.unique(arr).count().

numpy.unique(arr).value_counts().

numpy.unique(arr, count=True).

Question 5

How can you find the most frequently occurring element in a numpy array arr?

numpy.max(arr).

numpy.argmax(arr).

numpy.bincount(arr).argmax().

numpy.unique(arr, return_counts=True).max().

Question 6

How can you find the number of unique elements in a numpy array arr?

len(numpy.unique(arr)).

numpy.count_unique(arr).

numpy.unique(arr).size().

numpy.unique(arr).count().

Question 7

What is the result of applying numpy.bincount() to an array of integers?

Returns the unique elements in the array.

Returns the indices of unique elements.

Returns the count of each unique element.

Returns the sum of all elements in the array.

Question 8

Which numpy function can be used to find the indices of unique elements in an array?

numpy.unique_indices().

numpy.find_unique_indices().

numpy.indices_of_unique().

numpy.unique(return_index=True).

Question 9

Which of the following statements is true about numpy.unique()?

It only works on 1D arrays.

It can work on arrays of any dimension.

It only works on arrays with integer elements.

It cannot handle arrays with NaN values.

Question 10

Which of the following statements is true about the numpy.bincount() function?

It can only be applied to 1D arrays.

It returns a count of each unique value in the array.

It only works on arrays with non-negative integer values.

It returns a count of occurrences for each element in the array.

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shobha