A correlation coefficient is the statistical measure that will tell us whether there is a relationship between our two variables of interest, and if there is one, how strong that relationship is. The value of the correlation coefficient, ρ (rho), ranges from -1 to +1. The closer to -1...
The proportion of one variable in the total D. The average of a set of data 相关知识点: 试题来源: 解析 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...
What does the coefficientnottell us? The slope of the relationship If there is a relationship, but not necessarily linear.(E.g. in the image from the Wikipedia article above, we can assume that there is some kind of correlation in the bottom row, but since those are not linear, we cann...
What is the formula for standard deviation? Please provide an example of the calculation. Which of the following statistics cannot be negative? A. Covariance B. Variance C. E(r) D. Correlation coefficient Conceptually, what does the variance tell us about a set of data?
The further the coefficient is from zero, whether it is positive or negative, the better the fit and the greater the correlation. The values of -1 (for a negative correlation) and 1 (for a positive one) describe perfect fits in which all data points align in a straight line, indicating ...
Does a Correlation Coefficient of -0.8 Indicate a Strong or Weak Negative Correlation? A correlation coefficient of -0.8 indicates an exceptionally strong negative correlation. The two variables tend to move in opposite directions. The closer the coefficient is to -1.0, the stronger the negative rel...
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. ...
Given the following data what is the correlation coefficient between the two stocks and the Beta of stock A standard deviation of returns of Stock A is 10.04 percent standard deviation of returns of Stock B is 2.05 percent standard deviation of the market is 3.01 percent covariance between the ...
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...
Although partial correlation is a correlation of residuals, the correlation of the true-score components of these residuals is not equivalent to the partial correlation of the true scores themselves. The source of this discrepancy is explained and its implications are briefly discussed....