Next, we can add percent error bars to this single-point data series. But this time only select the individual x- and y-values to create a series with a single data point. It still starts by adding a second series to the chart. Instead of using a series to create the horizontal and vertical lines on the scatter chart, his method is to use error bars. I’ve used the above method for a long time, but the next method was recently introduced to me by Jon Peltier of. Plot Coordinates in Excel Using Error Bars We could also use this method for multiple x/y pairs also: So if the desired x-value is updated, the horizontal and vertical markers update as well. Of course, since it’s a chart series it automatically updates. Then we can add a data label and change the horizontal and vertical lines to dashed lines for better readability: So if we start with the data from our table of air density and temperature, then add a second series with those pairs of data (using a scatter plot with straight lines and markers), we get the following: The first and second pair of data points comprise the horizontal line from the y-axis to (x-value, y-value) and the second and third points make up the vertical line extending upward from the x-axis. The lines extending from the x- and y-axes to the interpolated point (x-value, y-value) can be created with a new data series containing three pairs of xy data. Plot XY Coordinates in Excel by Creating a New Series
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