問卷設計：為了確保獲得可靠的結果，問卷必須經過精心設計，問題要清晰、不帶偏見，且易於理解。
民調提供了一種系統性的方式來了解大眾的意見、態度和信念。進行民調的原因多種多樣，以下是一些主要的動機： 政策制定和評估：政府和政策制定者進行民調，以了解公眾對某一議題或政策的看法。這有助於制定或調整政策，以反映大眾的需求和意見。
社會科學研究：學者和研究者使用民調來了解人們的社會、文化和心理特征，以及其與行為的關係。
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限制：雖然民意調查是一個有價值的工具，但它也有其限制。例如，樣本可能不完全代表目標人群，或者問卷的設計可能導致偏見。
民調調查的質量和可信度很大程度上取決於其設計和實施的方法。若是由專業和無偏見的組織進行，且使用科學的方法，那麼民調結果往往較為可靠。但即使是最高質量的民調也會有一定的誤差，因此解讀時應保持批判性思考。 為什麼要做民調？
市場研究：企業和組織進行民調以了解消費者對產品、服務或品牌的態度，從而制定或調整市場策略。
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