Box/Whiskers More Options
Box/Whiskers More OptionsClick the More button in the Box/Whisker dialog (as well as on the Box/Whisker tab of the Plot Layout dialog and in the Graph Options dialog) to display the Box/Whiskers More Options dialog. Use this dialog to further customize the manner in which the individual elements of the icons that make up the box and whisker plot are computed.
Box. The Box group box is used to customize the elements of the box in your box and whisker plot.
Value. The Value drop-down box is used to assign a statistic to the box drawn in the box and whiskers plot. The options available in this box depend on the Middle point that you selected (see Plot: Box/Whisker). For the Median middle point you can select Percentiles, Min-Max, and Constant (draw a box to enclose a fixed-value interval around the middle point). For the Mean middle point, you can select Std. Dev. (standard deviation), Std. Err. (standard error of the mean), Conf. Interval (confidence interval for the mean), Min-Max (minimum and maximum value), and Constant.
Coefficient. You can also specify a value in the Coefficient edit field by which the selected Value will be multiplied to determine the range. If the specified Value is Constant, then the specified constant will be added/subtracted from the chosen center point (mean or median), to define the range of the box around that center point.
Whisker. The Whisker group box is used to choose how the ranges of whiskers are computed.
Value. The options available
in the Value drop-down box
Coefficient. You can also specify
a value in the Coefficient edit
field by which the selected Value
will be multiplied to determine the range. If the specified Value
is Constant, then the specified
constant will be added/subtracted from the chosen center point (mean or
median), to define the range of
Outliers. The options in the Outliers group box are used to control the display of outliers and extremes. Select Outliers, Extreme, or Outliers & Extremes in the drop-down box.
Display raw data. Select this check box to display the raw data points.
Jitter. Use the options in this group box to jitter the data points, i.e. modify the original position of the data point from the center of the graph in order to more easily identify/brush overlapping points.
Off. If you select Off, no jitter is applied to the raw data points, outliers, and extremes.
Sequential. If you select Sequential, the jitter is applied sequentially to the raw data points, outliers, and extremes. The jitter is applied such that the first case in the data set is maximally shifted to the left and the last case is shifted maximally to the right.
Random.
If you select Random, the data
point is randomly shifted within the available range.
Width. With this option, you can specify the maximum jitter width defined as percentage of box width. Possible percentages range from 0 to 250.
Trim distrib. extremes. Use the Trim distrib. extremes field to specify the percent of cases to be "trimmed" from the extremes (i.e., tails) of the distributions of cases for the selected dependent variables. For example, if you specify 10%, then for a variable with 100 cases, STATISTICA removes the 10 cases with the lowest values and the 10 cases with the highest values for the respective variable from the graph, and uses only the 80 remaining ("middle") cases. If you enter a value for Trim distrib. extremes for the mean-based box/whiskers, then the so-called "trimmed means" will be used in the graph.
Multiple box layout. The options in the Multiple box layout drop-down box are used to control the display of the Box/Whiskers in your graph when you select multiple dependent variables with the Multiple graph Format (as specified on the 2D Box Plots - Quick tab). Select Shifted to display a series of box & whiskers plots for the selected dependent variables in different colors, side by side. Select Overlaid to display a series of box & whiskers plots for the selected dependent variables in different colors, one on top of the other.