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

Table 3

Original principal component analysis.

Principal component number	Characteristic value	Contribution rate (%)	Cumulative contribution rate (%)
1	9.7663	81.3854	81.3854
2	0.8029	6.691	88.0765
3	0.4977	4.1474	92.2239
4	0.3906	3.2548	95.4787
5	0.2254	1.878	97.4787
6	0.189	1.5747	98.9314
7	0.053	0.4419	99.3733
8	0.0425	0.3538	99.7271
9	0.0228	0.1901	99.9172
10	0.0077	0.0641	99.9813
11	0.0014	0.0114	99.9926
12	0.0009	0.0074	100