题目The correlation coefficient ranges from ___. A. -1 to 1 B. 0 to 1 C. -∞ to +∞ D. 0 to ∞ 相关知识点: 试题来源: 解析 A。关于相关系数的范围,其取值在-1 到 1 之间,-1 表示完全负相关,1 表示完全正相关,0 表示无相关。反馈...
The correlation coefficient is a statistical measure of the strength of alinear relationshipbetween two variables. Its values can range from -1 to 1. A correlation coefficient of -1 describes a perfectnegative, orinverse,correlation, with values in one series rising as those in the other decline...
●Estimate the correlation coefficient from the R2 measure obtained in linear regressions with a single explanatory variable. 🌟Chapter 8: Regression With Multiple Explanatory Variables [QA-8] 新增1条: ●Calculate the regression R2 using the three components of the decomposed variation of the depende...
You calculate the correlation coefficient as a range between -1.0 and 1.0. If the two variables have a perfect negative correlation (-1), then they move in exactly opposite directions at the same rate. If they have a perfect positive correlation (1), then they travel in the same direction...
The correlation coefficient between stocks A and B is 0.75. The standard deviation of stock A’s returns is 16% and the standard deviation of stock B’s returns is 22%. What is the covariance between stock A and B?A. 0.3750.B. 0.0352.C. 0.0264. 正确答案:C 分享到: 答案解析: cov1...
If a sample correlation coefficient is 0.8, what can be said about the relationship between the two variables? A. There is a strong negative correlation. B. There is a weak positive correlation. C. There is a strong positive correlation. D. There is no correlation. ...
当实验1的相关系数为-0.91,实验2的相关系数为0.85时,下面哪个说法是错误的?When the correlation coefficient for experiment 1 is -0.91 and the correlation coefficient for experiment 2 is 0.85, which of the following statements is false? A. 实验1围绕回归线分布更分散the scatter around the regression ...
Because we will be dealing almost exclusively with samples, we will use r to represent Pearson's correlation unless otherwise noted. Pearson's r can range from -1 to 1. An r of -1 indicates a perfect negative linear relationship between variables, an r of 0 indicates no linear relationship...
This article deals with the use and misuse of the correlation coefficient when the dependent variable is of a dichotomous 0,1 nature. It focuses particularly on problems relating to curvilinearity and the nature of the prediction being made. The prediction of consumer purchases from reported subject...
fankui@gaodun.com