This is a regression data set consisting of 584 observations on 11 variables is taken from the national program for the development of wheat cultivation in Iraq - Qadisiyah governorate branch (2017). The outcome of interest in this dataset is the percentage increase in wheat yield per dunam (2500 square meters).
data("wheat")A data frame with 584 observations on the following 11 variables.
yThe percentage increase in wheat yield per dunam (2500 square meters).
UFertilizer urea (a numeric variable coding the quantity of fertilizer in kilogram).
DsThe date of sowing wheat seeds (a numeric variable coding date: 1 the ideal date, 2 early date, 3 late date).
QsThe quantity of sowing wheat seeds (a numeric variable coding the quantity of seeds in kilogram).
LTThe laser field leveling technique (a numeric variable coding technique: 2 if there are used this technique; 1 otherwise; "LT").
NPKThe fertilize the field with compound fertilizers (a numeric variable coding the quantity of fertilizer in kilogram).
SMTSeed sowing machine technique (a numeric variable coding the seed sowing machine technique: 2 if there are used this technique; 1 otherwise).
SCPlanting mung bean crop (a numeric variable coding type: 2 planting mung bean, 1 otherwise).
HHerbicide for weed control in crops (a numeric variable coding the quantity of herbicide in milliliter).
KHigh potassium fertilizer for crops (a numeric variable coding the quantity of fertilizer in kilogram).
MEMicroelement fertilizer (numeric variable coding the quantity of fertilizer in gram).