I have a four column data set, 2 columns have 5 rows and 2 columns have 3 rows. When I try and make a box and whiskers chart, it adds 2 extra points in the plot for the 2 columns with only 3 data points. How do i get it to only show the correct number of points? I tried the data cleansing tool to remove all the "nulls", but that only removed the "null" text on the x-axis when i first tried.