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Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.

The objectives are:-
1) to simplify the complex data.
2) to facilitate comparison.
3) to facilitate statistical analysis.
4) to provide reference for further studies.
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Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.

I) It is to simplify the complex data.
ii) It is to inaugrate statiatical analysis.
iii) To inaugrate comparison.