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Table 4 Descriptive statistics of industrial fields with top 10 average R&D investments (2007 ~ 2015)

From: Relation of R&D expense to turnover and number of listed companies in all industrial fields

Ranking

US SIC primary code - Text description

Average R&D investment

(CAGR, %)

Median

Standard deviation

Minimum

Maximum

1

28 - Chemicals and allied products

151,884,109

(4.39)

154,019,882

16,847,820

125,179,857

176,548,957

2

36 - Electronic and other electrical equipment and components, except computer equipment

115,438,474

(3.15)

124,361,807

15,109,790

93,528,903

133,242,357

3

37 - Transportation equipment

108,119,248

(2.06)

112,322,852

10,067,455

92,306,185

119,505,243

4

73 - Business services

56,528,208

(11.19)

52,848,383

16,663,724

37,147,573

86,762,354

5

35 - Industrial and commercial machinery and computer equipment

53,895,319

(4.74)

55,258,316

6,953,883

43,909,638

63,622,179

6

38 - Measuring, analyzing and controlling instruments; photographic, medical and optical goods; watches and clocks

25,523,664

(4.05)

26,861,865

2,715,436

21,417,885

29,430,019

7

13 - Oil and gas extraction

16,497,156

(7.23)

18,152,769

3,401,947

11,045,634

19,951,396

8

48 - Communications

12,563,872

(−1.05)

12,504,317

1,080,100

10,715,087

14,265,049

9

29 - Petroleum refining and related industries

10,699,576

(8.03)

10,232,185

1,979,904

7,725,321

14,332,164

10

20 - Food and kindred products

9,180,171

(3.95)

9,860,196

1,257,921

7,231,432

10,202,145

  1. Currency unit: thousand USD