Question Asked 17th Jan, 2018 Johannes Sun ## What should I do if R-square is 1.000 or 100%?My research topic is relationship between soil fertility and plant growth. The dependent variable is 1 (THT) and independent variable is 18 (soil chemists components and soil nutrients components). And my sample is 5 plots for soil A and 13 plots for soil B. When I use the multivariate linear regression on SPSS, the result of R-square and R is 1.000, but there is no appear a number of Adj R-square and SEE. On the ANOVA table, still no appear a number of F. and Sig. And the coefficients table, still no appear a number of t. and Sig. So, what must I do? I must add the sample or increase the independent variables? Or, I formerly use 2 procedure : 1. t test -> Sig of variables -> regression -> pearson correlation 2. pearson correlation -> Sig variables -> regression -> t test 3. Other If I use another software, Minitab, the result on output is different between SPSS. So, what can I do? Thanks. |