Analyzing the Investment Behavior in the Iranian Stock Exchange during the COVID-19 Pandemic Using Hybrid DEA and Data Mining Techniques

Table 5

Percentage of people who buy or sell shares from different industries with a special method in each cluster.

		Data of buying			Data of selling
		First cluster	Second cluster	Third cluster	First cluster	Second cluster	Third cluster	Fourth cluster
1	Telecommunication	0	2.6	4.8	6.1	4	0	5.2
2	Insurance	0	1.3	2.5	0	1.2	0	2.4
3	Machinery	0	6.4	4.1	8.2	5.3	11.1	4.6
4	Manufacturing of metallic products	0	0	1.4	0	2.6	0	1.5
5	Basic metals	0	3.8	8.4	0	11.3	11.1	9.3
6	Candy and sugar	0	0	0.8	0	0	0	0.7
7	Drilling	0	0	1.2	0	2.4	0	1.4
8	Transportation	0	1.3	0.9	0	1	0	1.1
9	Other nonmetallic products	0	0	1.3	0	0.4	0	1.6
10	Car	0	12.8	8	8.2	8.3	0	9.3
11	Tile	0	0	0.2	0	0.2	0	0.1
12	Technical and engineering services	0	25.6	6.8	32.7	16.2	33.3	6.7
13	Computer	0	1.3	1.4	2	2.2	0	1.4
14	Mass, real estate	0	1.3	2	2	1	0	1.8
15	Cement, lime	0	1.3	2.6	4.1	1.4	0	3
16	Chemical products	0	24.4	17.6	26.5	18.4	11.1	14.9
17	Medical products	0	0	4.9	2	2.4	0	5.2
18	Bank	50	3.8	16.5	0	10.7	11.1	13.4
19	Food products except sugar	0	3.8	3.3	0	1.2	0	3.7
20	Extraction of minerals	0	2.6	3.6	0	3.8	0	3.5
21	Multi-industrial companies	50	6.4	4.7	8.2	4	22.2	5.4
22	Mediators	0	1.3	2.5	0	1.6	0	3
23	Investment	0	0	0.5	0	0.2	0	0.6