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Journal of Inequalities and Applications
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Table 4 Pearson’s correlation coefficients between 13 metals observed in surface water samples received from Akcay River

From: Data analysis of heavy metal content in riverwater: multivariate statistical analysis and inequality expressions

  As Ba Co Cr Cu Fe Mn Ni Pb Sr Ti V Zn
As 1             
Ba \( \mathbf{0}\boldsymbol{.}\mathbf{330}^{\boldsymbol{*}} \) 1            
Co \( \mathbf{0}\boldsymbol{.}\mathbf{357}^{\boldsymbol{*}} \) 0.296 1           
Cr −0.071 0.282 −0.134 1          
Cu \( \mathbf{0}\boldsymbol{.}\mathbf{901}^{\boldsymbol{**}} \) 0.331\(^{\boldsymbol{*}}\) \( \mathbf{0}\boldsymbol{.}\mathbf{374}^{\boldsymbol{*}} \) −0.134 1         
Fe \( \mathbf{0}\boldsymbol{.}\mathbf{332}^{\boldsymbol{*}} \) 0.534\(^{\boldsymbol{**}}\) 0.199 0.247 0.289 1        
Mn 0.172 0.375\(^{\boldsymbol{*}}\) \( \mathbf{0}\boldsymbol{.}\mathbf{669}^{\boldsymbol{**}} \) 0.255 0.126 0.445\(^{\boldsymbol{**}}\) 1       
Ni 0.128 0.539\(^{\boldsymbol{**}}\) 0.116 \( \mathbf{0}\boldsymbol{.}\mathbf{475}^{\boldsymbol{**}} \) 0.264 0.322\(^{\boldsymbol{*}}\) \( \mathbf{0}\boldsymbol{.}\mathbf{509}^{\boldsymbol{**}} \) 1      
Pb 0.317 0.239 0.247 0.069 0.422\(^{\boldsymbol{**}}\) 0.083 0.111 0.348\(^{\boldsymbol{*}}\) 1     
Sr \( \mathbf{0}\boldsymbol{.}\mathbf{789}^{\boldsymbol{**}} \) 0.736\(^{\boldsymbol{**}}\) \( \mathbf{0}\boldsymbol{.}\mathbf{345}^{\boldsymbol{*}} \) −0.083 0.753\(^{\boldsymbol{**}}\) 0.387\(^{\boldsymbol{*}}\) 0.113 0.245 0.338\(^{\boldsymbol{*}}\) 1    
Ti 0.291 0.327\(^{\boldsymbol{*}}\) \( \mathbf{0}\boldsymbol{.}\mathbf{338}^{\boldsymbol{*}} \) 0.227 0.330\(^{\boldsymbol{*}}\) 0.404\(^{\boldsymbol{*}}\) 0.269 0.325\(^{\boldsymbol{*}}\) 0.165 0.275 1   
V \( \mathbf{0}\boldsymbol{.}\mathbf{822}^{\boldsymbol{**}} \) 0.278 0.290 −0.249 0.900\(^{\boldsymbol{**}}\) 0.153 −0.074 0.091 0.290 0.732\(^{\boldsymbol{**}}\) 0.228 1  
Zn \( \mathbf{0}\boldsymbol{.}\mathbf{473}^{\boldsymbol{**}} \) 0.412\(^{\boldsymbol{*}}\) \( \mathbf{0}\boldsymbol{.}\mathbf{358}^{\boldsymbol{*}} \) 0.181 0.588\(^{\boldsymbol{**}}\) 0.216 0.243 0.584\(^{\boldsymbol{**}}\) 0.547\(^{\boldsymbol{**}}\) 0.509\(^{\boldsymbol{**}}\) 0.456\(^{\boldsymbol{**}}\) 0.444\(^{\boldsymbol{**}}\) 1
  1. ∗∗Correlation is significant at the 0.01 level (2-tailed). ∗Correlation is significant at the 0.05 level (2-tailed).
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