his.to.gram

histogram的音标和读音：
DJ音标发音： [ˈhistəˌgræm]
KK音标发音： [ˈhɪstəˌgræm]

histogram的词性：
n.（名词）

1. A bar graph of a frequency distribution in which the widths of the bars are proportional to the classes into which the variable has been divided and the heights of the bars are proportional to the class frequencies.
矩形图，直方图：一种用来表示频分布的图表长方形的高表示相应的频率分布