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

6 ビュー (過去 30 日間)
Rhianne Tallarico
Rhianne Tallarico 2018 年 4 月 2 日
回答済み: Von Duesenberg 2018 年 4 月 3 日
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-');

回答 (1 件)

Von Duesenberg
Von Duesenberg 2018 年 4 月 3 日
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)

カテゴリ

Help Center および File ExchangeData Import and Analysis についてさらに検索

タグ

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by