A. 系数 B. 常数 C. 未知数 D. 等式 相关知识点: 试题来源: 解析 A。在方程中,“coefficient”指的是与变量相乘的数字,即“系数”,B 选项“常数”是不与变量相乘的固定值;C 选项“未知数”通常指的是 x 这样的变量;D 选项“等式”是整个方程的表述,不是“coefficient”的意思。反馈...
A。相关系数(correlation coefficient)在统计学中衡量两个变量之间关系的强度和方向。选项 B 中“the difference between two sets of data”指的是两组数据的差异;选项 C 中“the proportion of one variable in the total”指的是一个变量在总量中的比例;选项 D 中“the average of a set of data”指的是...
5x^2 + 5x + c versus 4x^2 + 4x + c. Now, let’s say that x = 2 and c = 5. The results would look like this, respectively: 5(2^2) + 5(2) + 5 = 35, and 4(2^2) + 4(2) + 5 = 29. The coefficient is a very powerful tool in mathematics, and Mark’s lessons ...
What is the value of the coefficient of determination?[单选题] A. 0.8261. B. 0.7436. C. 0.8623. 相关知识点: 试题来源: 解析 B 正确答案:B答案解析:B is correct. The coefficient of determination is the same as R-squared.反馈 收藏 ...
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
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
A. An outlier will always decrease a correlation coefficient. B. An outlier will always increase a correlation coefficient. C. An outlier might either decrease or increase a correlation coefficient, depending on where it is in relation to the other points. D. An outlier will have no effect on...
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
正确答案:A 分享到: 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相似...
What is measured when measuringa thermoelectric coefficient? Time 2023年11月1日(星期三) 15:00-16:00 Venue 理科楼5号楼300号报告厅 01. 摘要 Abstract A thermal gradient generates an electric field in any solid hosting mobile ...