Sxx value 2025: 求大神解答

求大神解答，β1中那个mxy和mxx 还有sxy sxx分别表示什么意思？ 还有最后一列的方差为什么这么求，都代表什么？ 谢谢大神解答 [图片] 显示全部 关注者 2 被浏览 SXX SXX is one of the components computed in finding the correlation and regression. It is a measure of variability. It is also known as the sum of squares of the variable x. Key Vocabulary: Standard Deviation: The formula for standard deviation uses the sum of the squares of the deviations from the mean. This is a good indicator of spread or variance of the data set. Linear Regression: The slope of the regression line is proportional to the standard deviation of y and inversely proportional ... What is the meaning of the symbols $S_{xx}$ and $S_{xy}$ in simple linear regression? I know the formula but what is the meaning of those symbols? You'll need to complete a few actions and gain 15 reputation points before being able to upvote. Upvoting indicates when questions and answers are useful. What's reputation and how do I get it? Instead, you can save this post to reference later.