How do I produce an R value for the following data?

Question

Rhianne Tallarico 2018-4-2

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/392218-how-do-i-produce-an-r-value-for-the-following-data

回答： Von Duesenberg 2018-4-3

time_2 = [0.2572 1.3918 2.9652 4.2965 6.1876 7.8971];
conc_2 = [0.2134 0.1638 0.1241 0.0720 0.0149 -0.0447];
figure
plot(time_2,conc_2)
title('Data Set 2')
xlabel('Time')
ylabel('Concentration')
coeffs = polyfit(time_2,conc_2,1);
fittedX = linspace(min(time_2), max(time_2), 200);
fittedY = polyval(coeffs, fittedX);
hold on;
plot(fittedX, fittedY, 'r-');

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Von Duesenberg 2018-4-3

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/392218-how-do-i-produce-an-r-value-for-the-following-data#answer_313226

在 MATLAB Online 中打开

In your case, with a polynomial of degree 1, you are pretty much assessing to whant extent the relationship between your two variables follow a straight line; maybe a simple correlation coefficient is what you want:

corrcoef(time_2, conc_2)