统计学 示例 频数分布

求频数分布表的组距

解题步骤 1
每组的下限为该组的最小值。另外，每组的上限为该组的最大值。
解题步骤 2
组距为连续组的组上限或组下限之差。所有组应具有相同的组距。在本例中，组距等于前两个组的下限之差。
解题步骤 3
化简求出组距为 。
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频数分布

Finding the Relative Frequency Finding the Percentage Frequency Finding the Upper and Lower Class Limits of the Frequency Table Finding the Class Boundaries of the Frequency Table Finding the Midpoints of the Frequency Table Finding the Mean of the Frequency Table Finding the Variance of the Frequency Table Finding the Standard Deviation of the Frequency Table Finding the Cumulative Frequency of the Frequency Table Finding the Relative Frequency of the Frequency Table Finding the Median Class Interval of the Frequency Table Finding the Modal Class of the Frequency Table

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