Machine Learning Zoomcamp 2024

Homework 6: Decision Trees and Ensemble Learning Statistics

Distribution of scores and reported study time for this homework.

Submissions

233

Median total score

6

Average total score

6

Score distribution

All values are points.

Questions score

Min
1
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
1.0
Q3
0.0

Total score

Min
1
Median
6.0
Max
14
Q1
5.0
Avg
6.3
Q3
6.0

Time distribution

All values are hours reported by students.

Lectures

Min
0.0
Median
4.0
Max
30.0
Q1
3.0
Avg
5.8
Q3
6.0

Homework

Min
0.0
Median
3.0
Max
20.0
Q1
2.0
Avg
3.3
Q3
4.0

Question breakdown

Correctness and answer distribution per question.

1. Most important featute

228 / 234 correct (97.4%)

1 study_hours_per_week 229 (97.9%)
2 attendance_rate 3 (1.3%)
3 teacher_quality 1 (0.4%)
4 distance_to_school 1 (0.4%)

2. Random forest RMSE

214 / 234 correct (91.5%)

1 22.13 8 (3.4%)
2 42.13 215 (91.9%)
3 62.13 10 (4.3%)
4 82.12 1 (0.4%)

3. Number of estimators

177 / 234 correct (75.6%)

1 10 17 (7.3%)
2 25 9 (3.8%)
3 80 178 (76.1%)
4 200 28 (12.0%)

4. Best max_depth

203 / 234 correct (86.8%)

1 10 204 (87.2%)
2 15 6 (2.6%)
3 20 10 (4.3%)
4 25 12 (5.1%)

5. Most important feature

205 / 234 correct (87.6%)

1 study_hours_per_week 206 (88.0%)
2 attendance_rate 2 (0.9%)
3 distance_to_school 15 (6.4%)
4 teacher_quality 8 (3.4%)

6. Eta for XGBoost

198 / 234 correct (84.6%)

1 0.3 16 (6.8%)
2 0.1 199 (85.0%)
3 Both give equal value 15 (6.4%)

Calculated: 7 November 2024, 08:33