最新提问
我的动态
登录后查看动态
题目内容双击单词支持查询和收藏哦~

The standard deviation of n numbers $$x_{1}$$, $$x_{2}$$, $$x_{3}$$,......, $$x_{n}$$, with mean x is equal to $$\sqrt{\frac{s}{n}}$$, where S is the sum of the squared differences, $$(x_{i}- x)^{2}$$ for 1 ≤ i ≤ n.
The mean of the amounts that Vendor 2 charged for the bundles sold in November was $2.80. What was the standard deviation of these amounts?
C显示答案
· 相关考点
5.2.9 标准差 5.1.7 综合图表题
5.2.9 标准差
5.1.7 综合图表题
以上解析由 考满分老师提供。