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== 問題與挑戰 == === 量化分析的挑戰 === 迷失1:「質化分析的訪問者不具備代表性,巨量資料的數據分析才有母體的代表性」 * 資料是否具備母體代表性:如果母體是一國國民,已知服務使用者有 1% 的國民,此時巨量資料的使用行為資料是否有母體代表性? * 資料是否能回答問題:如果追蹤器 (tracker) 沒有事先規劃好,在缺乏相關的數據狀況下,無法分析、也無法回答問題。 * 如果沒有人使用服務或者是新創服務,也不會有數據可供分析。 * 如果資料來自使用者的評論,可能受到僵屍帳號洗榜,或者是商家行銷活動影響。 === 質化分析的挑戰 === * 訪問或問卷的招募方式與受測者條件,是否能回答原本想問的問題? * 質化分析不像量化分析有數據結果,結果沒有說服力? 相關討論: [https://www.facebook.com/Nor.Chen.0205/posts/10155401069969791?pnref=story Nor Chen - 最近在一個演講場合結束後 一位聽眾走過來聊抽樣這件事 當然他想表達的是 質化資料受訪者的代表性...] * 訪問或問卷要找多少人,結果才有說服力?
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