what arc represents in r graph what are the four bars on an arc graph what is the figure output in r? what is the arc curve? which panel is used for confidence intervals in r? what is the plot of the r figure using the effect libraries for how many panels in figure what is the value of the five panels in a figure in r what does the blue panel represent in r what does the grey panel in r mean what are the panel in the figure what does the orange panel represent why are the 5 panels on the figure what is the function of the four panels in the figure what are the five panel in r? what is the arc in r what does the orange bars in a curve represent what is the panel in the r figure that represents the confidence interval what is the arc curve in r figures how many panels does a graph use in r