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Summarizing and Visualizing Data

Survey Data as Percentage Frequencies

Description

Survey data can be shown as percentage frequencies to display how observations are spread across each data point or group. This format shows the share of the total for each response or category. It is a common way to present relative frequency in survey results and other data.

Percentage frequenc...

Transcript

考虑一个关于不同身高的冰球运动员的相对频率分布表。该表提供了每个类别下数据值所占比例(或分数)的信息。

若该相对频率以百分比表示,则称为百分比频率分布。

假设我们关注身高在152至157厘米之间的球员所占的百分比。为此,可将相应的相对频率乘以100,得到百分比频率。这表明,有5%的球员处于该身高范围内。

对所有其他相对频率重复类似的计算,以获得每个类别下的百分比频率。通常,所有百分比频率的总和等于 100。