which statement describes a linear distribution function? what is the qqline function in r r is used to compare the quartile of the distribution qqnorm is used when which function of the graphs is used to test for normality what is qqline function what is the function qqline which function does qqnorm use what is the use for qqline in r what is the use of the line produced by qqline in r how to use qqline in r function what is qqnorm in r qqlines definition qqline define r function to calculate average linear distribution what is the purpose of qqline in r what is the use of the line produced by qqnorm? what is the use of the line produced by qqline in r? is qqnorm used in qqline how do you plot your qq plot in r