Machine Learning Zoomcamp 2025

Homework 2: Machine Learning for Regression Statistics

Distribution of scores and reported study time for this homework.

Submissions

1022

Median total score

5

Average total score

5

Score distribution

All values are points.

Questions score

Min
-
Median
5.0
Max
6
Q1
4.0
Avg
4.7
Q3
6.0

Learning in public score

Min
-
Median
0.0
Max
7
Q1
0.0
Avg
0.5
Q3
0.0

Total score

Min
-
Median
5.0
Max
14
Q1
4.0
Avg
5.3
Q3
6.0

Time distribution

All values are hours reported by students.

Lectures

Min
0.0
Median
5.0
Max
138.0
Q1
3.0
Avg
8.1
Q3
8.0

Homework

Min
0.0
Median
3.0
Max
48.0
Q1
2.0
Avg
3.9
Q3
4.0

Question breakdown

Correctness and answer distribution per question.

1. Missing values

1008 / 1025 correct (98.3%)

1 'engine_displacement' 7 (0.7%)
2 'horsepower' 1010 (98.5%)
3 'vehicle_weight' 2 (0.2%)
4 'model_year' 2 (0.2%)

2. Median for horse power

979 / 1025 correct (95.5%)

1 49 4 (0.4%)
2 99 22 (2.1%)
3 149 982 (95.8%)
4 199 9 (0.9%)

3. Filling NAs

715 / 1025 correct (69.8%)

1 With 0 119 (11.6%)
2 With mean 718 (70.0%)
3 Both are equally good 169 (16.5%)

4. Best regularization

600 / 1025 correct (58.5%)

1 0 601 (58.6%)
2 0.01 319 (31.1%)
3 1 22 (2.1%)
4 10 15 (1.5%)
5 100 30 (2.9%)

5. RMSE Standard Deviation

725 / 1025 correct (70.7%)

1 0.001 161 (15.7%)
2 0.006 727 (70.9%)
3 0.060 73 (7.1%)
4 0.600 20 (2.0%)

6. Evaluation on test

822 / 1025 correct (80.2%)

1 0.15 82 (8.0%)
2 0.515 825 (80.5%)
3 5.15 57 (5.6%)
4 51.5 15 (1.5%)

Calculated: 10 October 2025, 14:57