how do you generate error bars how to generate error bars in polynomial data why is the error bar smaller for y axis when to use y and y errors in a data set how to generate error bars for poisson count what is the error bar for poisson counts how to write error bar in probability how to get a y-axis error bar how to write error bars on data which data is given an error bar? do you need an error bar for poisson count how to create error bars for poisson count x y what is the p value of the error bar in poisson what is the error on each axis y-axis error what is the error of a y axis for p value why do i need to create an error bar which of the following would be used to show an error bar for the y-axis in the range of poisson y axis error error bar for poisson vs time