题目内容：
在直线回归分析中，得到回归系数为一0．30，经检验有统计学意义，说明
参考答案：
答案解析：
单选题：在直线回归分析中，得到回归系数为一0．30，经检验有统计学意义，说明
- 题目分类：公卫助理医师
- 题目类型：单选题
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