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Dot Graph Format (Options menu)

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Displays a dialog box that allows you to specify the plotting parameters and attributes for a dot graph.

 

Group data points

Select from "Duplicates" and "Histogram".

Duplicates

Individual data points for each group are plotted along a single line (position determined by the value along the axis), and are stacked if there is an exact duplicate point.

Histogram

Individual data points for each group are plotted along a single line (position determined by the value along the axis), and are stacked according to which "bins" or "intervals" they fall in, as in a histogram. The formula for determining the bin or interval width is as follows:

interval width =

where R is the range (maximum – minimum) of the entire plotted data set, n is the total sample size across all groups, and log is the natural logarithm.

 

The bins start with the lowest value in the entire data set, and continue up to the highest value in the data set. In terms of plotting the points, each individual data point will take on the value of the midpoint of the interval in which it falls.

Draw grand median/mean

Check this box to draw a solid line through the median (for median-based plots) or mean (for mean-based plots) for all groups.

Vertical groups

Check this box to rotate the plot such that groups are on the vertical axis and amplitudes are on the horizontal axis.

Draw group info

Check this box to draw summary info (mean, standard deviation, and coefficient of variation) for each group.

 


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