Descriptive Statistics of Raw Data

Variables

Mean

Std. Error

Std. Deviation

Skewness

Kurtosis

Z-Test

Shapiro-Wilk

Skewness

Kurtosis

Statistic

p-value

Ni

373.874

90.620

373.634

2.017

4.080

3.667

3.838

0.758

0.001

Pb

37.330

1.387

5.718

1.670

3.372

3.036

3.172

0.846

0.009

Cd

1.575

0.063

0.260

0.277

−0.706

0.504

−0.664

0.943

0.350

Mn

1213.000

169.022

696.896

0.690

1.338

1.255

1.259

0.910

0.100

Cu

64.154

12.208

50.334

2.217

6.248

4.031

5.878

0.785

0.001

Zn

56.409

6.052

24.955

0.816

−0.073

1.484

−0.069

0.915

0.120

Cr

1172.891

352.242

1452.331

2.070

4.406

3.764

4.145

0.719

0.000

Ti

578.083

61.916

255.286

1.021

0.200

1.856

0.188

0.896

0.058

V

61.139

5.855

24.141

0.924

1.783

1.680

1.677

0.936

0.273

Fe

72065.855

11702.250

48249.612

1.919

4.478

3.489

4.213

0.816

0.003

As

4.823

0.883

3.639

0.615

−0.667

1.118

−0.627

0.914

0.118