Table 3. Pearson correlation between each obtained physical attributes with principle components obtained from PCA

Variables	PC1	PC2	PC3	PC4	PC5	PC6
Hectoliter	0.514	−0.094	−0.044	−0.209	−0.824	0.053
True density	−0.43	−0.407	0.107	−0.623	−0.037	0.499
Thousand kernel weight	0.22	−0.228	−0.894	−0.185	0.257	−0.016
Hardness	−0.255	−0.77	0.015	0.347	−0.188	−0.432
Moisture	0.456	−0.208	0.387	−0.498	0.384	−0.452
Broken ratio	0.479	−0.371	0.194	0.408	0.266	0.598