I need to explore the determinants of wheat yield using multiple regression. There are 120 observations. Do I need to use ANOVA? I am using R studio. My results need to include a consideration of more than one functional form, one or more interaction terms for a select set of variables, and the use of dummy variables.
yld wheat yield in kg/ha R Growing season rainfall (mm) N nitrogen fertilization rate (kg/ha) PrevCereal 1 if precious crop was a cereal, 0 otherwise RegionCode Location code (0/1)