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1. ҧἹ (planning) ͹ աҧἹͧǢͧ֡ ҷ ѭǡѺͧͧ˹ 繻ѭǡѺâҴŹʹö Ңͧ ʶҹ ͧҧἹѭ¨Ѵʶҹ§

2. Ǻ (collection of data) ͡˹㹢鹷 1 Ҩй繢 зӡǺԸա÷ҧʶԵԫ觨ǵ

3. ùʹ (Presentation of data) Ǻǡйʴ餹 ҨʴٻҧʶԵ ٻҾ Ẻ

4. (Analysis of data) ŵͧáй Ҩٻ Ѵǹ ͤ С˹㹢鹵͹ 1

5. õդ (Interpretation of data) 繢鹵͹ ش ػš㹢鹵͹ 4 ֧ ùӼŷҧԧѺǹ

. 㹡ó繵Ţ

¶֧ Ţҧ ҷ ӹǹԵŧ¹¹ ԪʶԵ 422101 ШҤ 2540 - 41 ӹǹ ЪҪԷ͡§͡ ӹǹááԴ ͺ͹ ӹǹö¹訴¹ͺ͹ ͨӹǹ 21 ѹ 1 ¹ 2540
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