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Julies history class and sociology class meet in the same building, and her traveling distance to the building is 5.0 kilometers. The mean traveling distance for the students in the history class is 2.5 kilometers, and Julie's traveling distance is 2 standard deviations above the mean. The mean traveling distance for the students in the sociology class is 7.5 kilometers, and Julie's traveling distance is 1 standard deviation below the mean. The standard deviation of the traveling distances for the students in the history class is how many kilometers greater or less than the corresponding standard deviation for the sociology class?
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· 相关考点
5.3.1 数据分布的描述
5.3.1 数据分布的描述
以上解析由 考满分老师提供。
