highly significantp < .01
It was highly significant ( p < .01) that four linear parameters ( X 1 , X 2 , X 3 , and X 4 ) and all quadratic parameters were presented in the model.
It was highly significant ( p < .01) that four linear parameters ( X 1 , X 2 , X 3 , and X 4 ) and all quadratic parameters were presented in the model.