百度试题 题目What is the coefficient of variation for a distribution with a mean of 10 and a variance of 4? A. 20%. B. 40%. C. 25%. 相关知识点: 试题来源: 解析 A 略 反馈 收藏
答案解析: Coefficient of variation, CV = standard deviation / mean. The standard deviation is the square root of the variance, or 4½ = 2. So, CV = 2 / 10 = 20%. 统计:共计66人答过,平均正确率62.12% 问题:进入高顿部落发帖帮助...
百度试题 结果1 题目What is the coefficient of x1 in the complete expansion of (x+1)20( ).A.400B.20C.19D.1 相关知识点: 试题来源: 解析 B 反馈 收藏
It is the process that helps to assess various types of issues that could result in the adverse impact of the activities of an entity. The objective to achieve through this process is to reduce or eliminate those risks.Answer and Explanation: Coefficient of Variation The coefficient of variatio...
Write the balanced equation for the reaction that occurs when methanol, CH3CH (l) is burned in air. What is the coefficient of methanol in the balanced equation? A.1 B.2 C.3 D.4 E.1.5 点击查看答案 你可能感兴趣的试题 单项选择题 ...
百度试题 结果1 题目For the reaction Mg + O₂ = 2MgO, what is the coefficient of magnesium oxide? A. 1 B. 2 C. 3 D. 4 相关知识点: 试题来源: 解析 B。氧化镁的系数是 2。反馈 收藏
百度试题 结果1 题目【题目】What is the coefficient of the as term in theexpansion of(a+b)^(10) (A.252B.126C.210D.462E.120 相关知识点: 试题来源: 解析 【解析】A 反馈 收藏
百度试题 结果1 题目What is the coefficient of the a^5 term in the expansion of (a+b)^(10)? ( ) A. 252 B. 126 C. 210 D. 462 E. 120 相关知识点: 试题来源: 解析 A 反馈 收藏
The reaction between iron and sulfur is Fe+S→FeS. What is the coefficient of iron in this equation?___ A. 1 B. 2 C. 3 D. 4 相关知识点: 试题来源: 解析 A。铁和硫反应的化学方程式中,铁的系数是 1。B、C、D 选项的系数都不符合该反应。反馈...
The path of a projectile is given by y = -0.5x² + 10x. What is the coefficient of x²? A. 0.5 B. -0.5 C. 10 D. None of the above 相关知识点: 试题来源: 解析 B。解析:二次函数表达式中 x²的系数就是-0.5。选项 A 错误。选项 C 是 x 的系数。