BANA6620 Quiz 3 - Arrays + Indexing/Slicing

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Last updated 10:03 PM on 9/7/26
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12 Terms

1
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Bumpy array vs. Python list?

Bumpy array → elements use the same data type


Python list → can contain different data types

2
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What does .shape tell you?

Array dimensions


Example: rows x columns

3
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What does .size tell you?

Total number of elements

4
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What does .ndim tell you?

Number of dimensions/ axes

5
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In NumPy slicing, is STOP included?

NO.


Start ✅

Stop 🛑

6
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What does a negative index do?

Counts from the end.


-1 → last element

7
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What does this do?


arr[::-1]

Reverses the array

8
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What does this do?


are[::2]

Selects every second element

9
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What does np.array([…]) do?


Creates a NumPy array from a list

10
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What does np.ones((2,3)) create?

A 2×3 array


Filled with:

1.0

11
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What does np.zeros((2,3)) create?

A 2×3 array


Filled with:

0.0

12
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What does np.linspace(start, stop.num) do?

Creates num evenly spaced values


From start → stop.


STOP included by default