Machine Learning Zoomcamp 2026

Homework 2: Machine Learning for Regression Statistics

Distribution of scores and reported study time for this homework.

Submissions

666

Median total score

Average total score

Score distribution

All values are points.

Metric	Min	Q1	Median	Average	Q3	Max
Questions score	-	5.0	6.0	5.3	6.0	6
Learning in public score	-	0.0	0.0	0.3	0.0	7
Total score	-	5.0	6.0	5.6	6.0	14

Questions score

Min: -
Median: 6.0
Max: 6
Q1: 5.0
Avg: 5.3
Q3: 6.0

Learning in public score

Min: -
Median: 0.0
Max: 7
Q1: 0.0
Avg: 0.3
Q3: 0.0

Total score

Min: -
Median: 6.0
Max: 14
Q1: 5.0
Avg: 5.6
Q3: 6.0

Time distribution

All values are hours reported by students.

Metric	Min	Q1	Median	Average	Q3	Max
Lectures	0.0	3.0	4.0	6.5	7.0	96.0
Homework	0.0	2.0	3.0	3.7	4.0	85.0

Lectures

Min: 0.0
Median: 4.0
Max: 96.0
Q1: 3.0
Avg: 6.5
Q3: 7.0

Homework

Min: 0.0
Median: 3.0
Max: 85.0
Q1: 2.0
Avg: 3.7
Q3: 4.0

Question breakdown

Correctness and answer distribution per question.

1. Missing values

657 / 666 correct (98.6%)

1 engine_displacement 5 (0.8%)

2 horsepower 657 (98.6%)

3 vehicle_weight 1 (0.2%)

4 model_year 1 (0.2%)

2. Median for horsepower

638 / 666 correct (95.8%)

1 204 15 (2.3%)

2 254 638 (95.8%)

3 304 4 (0.6%)

4 354 2 (0.3%)

3. Filling NAs

505 / 666 correct (75.8%)

1 With 0 53 (8.0%)

2 With mean 505 (75.8%)

3 Both are equally good 100 (15.0%)

4. Best regularization

545 / 666 correct (81.8%)

1 0 545 (81.8%)

2 0.01 57 (8.6%)

3 0.1 31 (4.7%)

4 1 4 (0.6%)

5 5 1 (0.2%)

6 10 3 (0.5%)

7 100 10 (1.5%)

5. RMSE standard deviation

563 / 666 correct (84.5%)

1 0.006 45 (6.8%)

2 0.016 25 (3.8%)

3 0.029 563 (84.5%)

4 0.036 18 (2.7%)

6. Evaluation on test

590 / 666 correct (88.6%)

1 0.236 50 (7.5%)

2 2.236 590 (88.6%)

3 22.10 7 (1.1%)

4 221.0 2 (0.3%)

Calculated: 12 October 2026, 07:10