Research on Classroom Teaching Quality Evaluation and Feedback System Based on Big Data Analysis

Table 5

Principal component analysis has now been improved.

Principal component number	Characteristic value	Contribution rate (%)	Cumulative contribution rate (%)
1	7.1398	78.9847	83.1915
2	0.6894	8.1453	91.3366
3	0.5894	3.5098	94.8486
4	0.2947	2.1298	96.9762
5	0.1148	1.3639	98.3401
6	0.0381	1.0371	99.3772
7	0.0251	0.2987	99.6759
8	0.0198	0.1984	99.8743
9	0.0101	0.0839	99.9582
10	0.0029	0.0289	99.9871
1	7.1398	78.9847	83.1915
2	0.6894	8.1453	91.3366