Research Article
Developing Machine Learning Techniques to Investigate the Impact of Air Quality Indices on Tadawul Exchange Index
| | PM10 | O3 | NO2 | SO2 | CO | AQI | Month | Day | Year | TASI |
| PM10 | Corr. | 1.000 | 0.152 | −0.267 | 0.163 | −0.176 | 0.804 | 0.026 | 0.172 | 0.160 | 0.043 | Sig. | | 0.010 | 0.000 | 0.006 | 0.004 | 0.000 | 0.660 | 0.003 | 0.006 | 0.466 |
| O3 | Corr. | 0.152 | 1.000 | −0.227 | 0.199 | 0.194 | 0.563 | 0.224 | 0.005 | −0.248 | 0.003 | Sig. | 0.010 | | 0.000 | 0.001 | 0.001 | 0.000 | 0.000 | 0.933 | 0.000 | 0.962 |
| NO2 | Corr. | −0.267 | −0.227 | 1.000 | −.066 | 0.335 | −0.267 | 0.284 | −0.028 | −0.320 | −0.113 | Sig. | 0.000 | 0.000 | | 0.265 | 0.000 | 0.000 | 0.000 | 0.633 | 0.000 | 0.053 |
| SO2 | Corr. | 0.163 | 0.199 | −0.066 | 1.000 | −0.125 | 0.165 | 0.088 | 0.048 | 0.266 | 0.295 | Sig. | 0.006 | 0.001 | 0.265 | | 0.041 | 0.005 | 0.135 | 0.417 | 0.000 | 0.000 |
| CO | Corr. | −0.176 | 0.194 | 0.335 | −0.125 | 1.000 | 0.002 | 0.054 | −0.035 | −0.585 | −0.327 | Sig. | 0.004 | 0.001 | 0.000 | 0.041 | | 0.977 | 0.370 | 0.561 | 0.000 | 0.000 |
| AQI | Corr. | 0.804 | 0.563 | −0.267 | 0.165 | 0.002 | 1.000 | 0.085 | 0.158 | −0.057 | −0.013 | Sig. | 0.000 | 0.000 | 0.000 | 0.005 | 0.977 | | 0.140 | 0.006 | 0.325 | 0.823 |
| Month | Corr. | 0.026 | 0.224 | 0.284 | 0.088 | 0.054 | 0.085 | 1.000 | −0.048 | −0.422 | 0.060 | Sig. | 0.660 | 0.000 | 0.000 | 0.135 | 0.370 | 0.140 | | 0.409 | 0.000 | 0.298 |
| Day | Corr. | 0.172 | 0.005 | −0.028 | 0.048 | −0.035 | 0.158 | −0.048 | 1.000 | 0.027 | 0.039 | Sig. | 0.003 | 0.933 | 0.633 | 0.417 | 0.561 | 0.006 | 0.409 | | 0.639 | 0.501 |
| Year | Corr. | 0.160 | −0.248 | −0.320 | 0.266 | −0.585 | −0.057 | −0.422 | 0.027 | 1.000 | 0.693 | Sig. | 0.006 | 0.000 | 0.000 | 0.000 | 0.000 | 0.325 | 0.000 | 0.639 | | 0.000 |
| TASI | Corr. | 0.043 | 0.003 | −0.113 | 0.295 | −0.327 | −0.013 | 0.060 | 0.039 | 0.693 | 1.000 | Sig. | 0.466 | 0.962 | 0.053 | 0.000 | 0.000 | 0.823 | 0.298 | 0.501 | 0.000 | |
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Significant at the 0.01 level (two-tailed). Significant at the 0.05 level (two-tailed). |