what is the gray area around the blue regression line what is the gray area around a test line in polynomial regression which area does the confidence band appear in a polynomial regression what is the confidence of polynomials what is grey area around polynomial regression line what is arrow for polynomial regression which is a confidence interval of the polynomial? what is the gray area of the polynomial regression what is the grey area of a polynomial what is the gray area for polynomial regression what is the confidence area of a polynomial regression plot? what is the gray area at the end of the polynomial regression plot? what is the gray area in a polynomial range of confidence? what is the standard deviation of a polynomial regression in excel what is the grey area around the polynomial regression line why do i get the confidence band on the r test what is r ggplot used for to find what is the gray area around a polynomial regression can i find the confidence band in linear regression with ggplot why is grey area around a polynomial regression