SECTOR

N

Range

Minimum

Maximum

Mean

Std. Deviation

Variance

Statistic

Statistic

Statistic

Statistic

Statistic

Std. Error

Statistic

Statistic

AGRICULTURE

Before tax reform

12

0.06

0.01

0.07

0.0314

0.01234

0.02468

0.001

After tax reform

12

0.08

0.19

0.27

0.2294

0.01936

0.03873

0.001

CONGLOMERATE

Before tax reform

20

0.24

0.06

0.29

0.2095

0.05190

0.10381

0.011

After tax reform

20

0.62

−0.10

0.52

0.1353

0.13540

0.27079

0.073

CONSTRUCTION

Before tax reform

12

0.08

0.15

0.23

0.1758

0.01873

0.03746

0.001

After tax reform

12

0.10

0.13

0.23

0.1945

0.02250

0.04501

0.002

CONSUMER GOODS

Before tax reform

68

0.09

0.10

0.19

0.1535

0.02190

0.04380

0.002

After tax reform

68

0.05

0.18

0.22

0.1977

0.00979

0.01958

0.000

FIN SERVICES

Before tax reform

68

0.12

0.13

0.25

0.1994

0.02511

0.05022

0.003

After tax reform

68

0.28

0.03

0.32

0.1537

0.05961

0.11922

0.014

HEALTH

Before tax reform

28

0.39

0.31

0.70

0.4144

0.09517

0.19034

0.036

After tax reform

28

0.14

0.06

0.20

0.1252

0.02887

0.05774

0.003

INDUSTRIAL GOODS

Before tax reform

68

1.14

−0.97

0.17

−0.1325

0.27914

0.55829

0.312

After tax reform

68

1.22

0.13

1.35

0.4524

0.29813

0.59627

0.356

INFOR

Before tax reform

8

0.53

0.00

0.52

0.2052

0.11253

0.22506

0.051

After tax reform

8

0.08

0.10

0.18

0.1478

0.01733

0.03466

0.001

NAT RESOURCES

Before tax reform

8

0.27

−0.07

0.20

0.1039

0.06073

0.12145

0.015

After tax reform

8

0.14

0.21

0.36

0.3037

0.03240

0.06480

0.004

OIL AND GAS

Before tax reform

24

0.06

0.18

0.24

0.2090

0.01526

0.03052

0.001

After tax reform

24

0.03

0.15

0.19

0.1707

0.00736

0.01472

0.000

SERVICES

Before tax reform

28

0.18

0.11

0.30

0.2140

0.03780

0.07561

0.006

After tax reform

28

0.58

−0.08

0.50

0.2201

0.12237

0.24475

0.060