NumPy Syntax Quiz

What is a correct syntax to create a NumPy array?

• np.createArray([1,2,3,4,5])

• np.array([1,2,3,4,5])

• np.object([1,2,3,4,5])

Which of the following arrays is a two-dimensional (2-D) array?

• 42

• [1,2,3,4,5]

• [[1,2,3],[4,5,6]]

What is a correct syntax to check the number of dimensions in an array?

• arr.dim

• arr.ndim

• arr.dim()

• arr.ndim()

What is a correct syntax to print the first item of an array?

• print(myArr,1)

• print(myArr[0])

• print(myArr[1])

What is a correct syntax to print the number 8 from the array below: arr=np.array([[1,2,3,4,5],[6,7,8,9,10]])

• print(arr[3,0])

• print(arr[7,2])

• print(arr[1,2])

What is a correct syntax to print the numbers [3,4,5] from the array below: arr=np.array([1,2,3,4,5,6,7])

• print(arr[2:4])

• print(arr[3:6])

• print(arr[2:5])

• print(arr[2:6])

Which syntax would print the last 4 numbers from the array below: arr=np.array([1,2,3,4,5,6,7])

• print(arr[:4])

• print(arr[3:])

• print(arr[4])

• print(arr[4:])

Which syntax would print every other item from the array below: arr=np.array([1,2,3,4,5,6,7])

• print(arr(0:step=2))

• print(arr[1:3:5:7])

• print(arr[::2])

What is a correct syntax to check the datatype of an array?

• arr.ntype

• arr.type

• arr.datatype

• arr.dtype

What is a correct syntax to create an array of type float?

• arr=np.array([1,2,3,4]).toFloat()

• arr=np.float([1,2,3,4])

• arr=np.array([1,2,3,4],dtype='f')