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

Table 4

Averaging principal component analysis method.

Principal component number	Characteristic value	Contribution rate (%)	Cumulative contribution rate (%)
1	8.4675	79.3932	82.7765
2	0.7638	7.4178	90.1943
3	0.3795	4.2844	94.4787
4	0.3602	2.0042	96.4829
5	0.1883	1.4203	97.9032
6	0.0945	1.2859	99.1891
7	0.024	0.3698	99.5589
8	0.0278	0.2986	99.8575
9	0.0119	0.0875	99.945
10	0.0039	0.0398	99.9848
11	0.0013	0.0113	99.9961
12	0.0005	0.0039	100