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Figure 6: Box plots of five clusters<br />

3.4 Principal component analysis<br />

Michaela Drozdová et al.<br />

Principal component analysis found 13 components. The last component has much lower standard<br />

deviation compared to the other components (see table 2), so this component can be removed from<br />

the analysis. Most of the principal components have high coefficient in the covariance matrix (see<br />

table 3) at only one property, so this property is independent. Significant components with more than<br />

one high coefficient have high values mostly at sensual properties. This means that sensual<br />

properties depend on each other, but that was already known. All other properties are almost entirely<br />

independent.<br />

Table 2: Standard deviation table of principal components<br />

PC1 PC2 PC3 PC4 PC5 PC6 PC7 PC8 PC9 PC10 PC11 PC12 PC13<br />

3,46 2,45 2,26 2,09 1,51 1,25 1,08 0,75 0,34 0,31 0,29 0,26 0,00<br />

Table 3: Covariance matrix of principal components<br />

PC1 PC2 PC3 PC4 PC5 PC6 PC7 PC8 PC9 PC10 PC11 PC12 PC13<br />

visual 0,0 0,1 -0,1 0,0 -0,8 0,0 0,1 0,0 0,0 0,0 0,0 0,0 0,5<br />

kinesthetic 0,0 0,7 0,2 -0,1 0,3 0,0 0,0 0,0 0,0 0,0 0,0 0,0 0,5<br />

auditive 0,0 -0,6 0,6 -0,1 0,1 0,0 0,0 0,0 0,0 0,0 0,0 0,0 0,5<br />

verbal 0,0 -0,2 -0,7 0,3 0,3 0,0 -0,1 0,0 0,0 0,0 0,0 0,0 0,5<br />

social -1,0 0,0 0,0 0,0 0,0 0,0 0,0 0,0 0,0 0,0 0,0 0,0 0,0<br />

motivation 0,0 -0,1 -0,3 -0,9 0,0 0,0 0,0 0,0 0,0 0,0 0,0 0,0 0,0<br />

order 0,0 0,0 0,0 0,0 0,0 0,0 0,0 0,0 -0,7 -0,7 0,2 0,0 0,0<br />

theor/exper 0,0 0,0 0,0 0,0 0,0 0,0 0,0 0,0 0,1 -0,4 -0,9 0,2 0,0<br />

detail/holistic 0,0 0,0 0,0 0,0 0,0 0,0 0,0 0,0 -0,7 0,6 -0,2 0,4 0,0<br />

surface 0,0 0,0 0,0 0,0 -0,1 1,0 -0,1 0,1 0,0 0,0 0,0 0,1 0,0<br />

strategic 0,0 0,0 0,0 0,0 0,1 0,1 0,9 -0,3 0,0 0,0 0,0 0,0 0,0<br />

deep 0,0 0,0 0,0 0,0 0,1 -0,1 0,3 0,9 0,0 0,0 0,0 0,0 0,0<br />

auto-regulation 0,0 0,0 0,0 0,0 0,0 0,1 0,0 0,0 -0,3 0,2 -0,3 -0,9 0,0<br />

4. Conclusion<br />

The newly created LPQ questionnaire has many advantages compared to the group of questionnaires<br />

used in our previous research. Its main benefit is lower filling time that led to more honest filling.<br />

Analysis of filled questionnaires found only minor dependencies between chosen <strong>learning</strong> styles, so<br />

there is no need to change the set of measured student characteristic. One potential problem is that<br />

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