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Python
NumPy
Arrays, vectorised maths and statistics.
0
/ 20 solved
All levels
Basic (7)
Intermediate (7)
Advanced (6)
All
To do
Solved
1
Create an array
Basic
2
Mean, max, min
Basic
3
Range of numbers
Basic
4
Boolean filtering
Basic
5
Reshape
Basic
6
Element-wise operations
Basic
7
Sum along an axis
Basic
8
Column means
Intermediate
9
Normalise to 0–1
Intermediate
10
Where: label values
Intermediate
11
Cumulative sum
Intermediate
12
Percentage change
Intermediate
13
Count with a condition
Intermediate
14
Argmax
Intermediate
15
Z-scores
Advanced
16
Outliers with IQR
Interview
Advanced
17
Moving average
Advanced
18
Broadcasting
Advanced
19
Correlation
Interview
Advanced
20
Linear trend
Advanced