how to show the difference between 1999 and 2000 how to display the trend of an outlier graph of citations for 2000 what is the difference between citations for 1999 and 2000 how do i find the difference between the citation rates of the different sources how do you visualize the frequency of a given source citation how to plot citation frequency how to figure out the citation frequency how do you find out the frequency of a citation how to find out the difference between 1999 and 2000 how to graph data that has outliers what is the citation frequency how to visualize citation count how to use the frequency of cited data what are some outliers in citation data? how do you plot the frequency of cited articles how to plot citations which data points have outliers which dataset shows the highest number of references? how do i find out which of the following is true about the number of citations in each of the following year series