All complete 2nd order models will always have one quantitative variable, one qualitative variable with two levels, the squared term for the quantitative variable, the interaction between the quantitative variable and the qualitative variable, and the interaction term between the quantitative variable squared and the qualitative variable. All complete 2nd order models will always have one quantitative variable, one qualitative variable with two levels, the squared term for the quantitative variable, the interaction between the quantitative variable and the qualitative variable, and the interaction term between the quantitative variable squared and the qualitative variable. True False