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“AB 1774 aims to safeguard our communities and bike riders by encouraging Secure bike practices, and I hope the governor adds his signature to it.”以下是民意調查的一些基本特點和重要性: 抽樣:由於不可能向每一個人詢問意見,所以調查者會選擇一個代表性的樣本進行調查。這樣本的大小和抽