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【多选题】
下列国家军队人数超过一百万的是（）A.
美国
B.
中国
C.
印度
D.
朝鲜
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反馈参考答案：
举一反三
【单选题】The width of each bar in a histogram corresponds to the
A.
percentage of observations in each class.
B.
number of observations in each class.
C.
midpoint of each class.
D.
differences between the boundaries of the class.
【判断题】A histogram is said to be symmetric if, when we draw a vertical line down the center of the histogram, the two sides are identical in shape and size.
A.
正确
B.
错误
【判断题】In a histogram, the proportion of the total area that must be to the left of the median is less than 0.50 if the distribution is skewed to the left.
A.
正确
B.
错误
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