Example of Oneway Platform Options shows an example of the platform options in the red triangle menu for Oneway Analysis.
Example of Oneway Platform Options
 Platform Option Object Added to Plot Report Added to Report Window Quantiles Box plots Quantiles report Means/Anova Mean diamonds Oneway anova reports Means and Std Dev Mean lines, error bars, and standard deviation lines Means and Std Deviations report Compare Means Comparison circles (except Nonparametric Multiple Comparisons option) Means Comparison reports
 • 0% (Minimum)
 • 10%
 • 25%
 • 50% (Median)
 • 75%
 • 90%
 • 100% (Maximum)
Activates Box Plots from the Display Options menu.
The Means/Anova/Pooled t option appears only if the X factor has two levels.
Produces a t-test report assuming that the variances are not equal. See The t-test Report.
Performs four tests for equality of group variances. Also gives the Welch test, which is an anova test for comparing means when the variances within groups are not equal. See Unequal Variances.
Set α Level
You can select an option from the most common alpha levels or specify any level with the Other selection. Changing the alpha level results in the following actions:
 • recalculates confidence limits
 • adjusts the mean diamonds on the plot (if they are showing)
 • modifies the upper and lower confidence level values in reports
 • changes the critical number and comparison circles for all Compare Means reports
 • changes the critical number for all Nonparametric Multiple Comparison reports
 • Plot Actual by Quantile generates a quantile plot with the response variable on the y-axis and quantiles on the x-axis. The plot shows quantiles computed within each level of the categorical X factor.
 • Plot Quantile by Actual reverses the x- and y-axes.
 • Line of Fit draws straight diagonal reference lines on the plot for each level of the X variable. This option is available only once you have created a plot (Actual by Quantile or Quantile by Actual).
 • Save Residuals saves values computed as the response variable minus the mean of the response variable within each level of the factor variable.
 • Save Standardized saves standardized values of the response variable computed within each level of the factor variable. This is the centered response divided by the standard deviation within each level.
 • Save Normal Quantiles saves normal quantile values computed within each level of the categorical factor variable.
 • Save Predicted saves the predicted mean of the response variable for each level of the factor variable.
 All Graphs Shows or hides all graphs. Points Shows or hides data points on the plot. Box Plots Shows or hides outlier box plots for each group. Mean Diamonds Draws a horizontal line through the mean of each group proportional to its x-axis. The top and bottom points of the mean diamond show the upper and lower 95% confidence points for each group. See Mean Diamonds and X-Axis Proportional. Mean Lines Mean CI Lines Draws lines at the upper and lower 95% confidence levels for each group. Mean Error Bars Grand Mean Draws the overall mean of the Y variable on the plot. Std Dev Lines Comparison Circles Shows or hides comparison circles. This option is available only when one of the Compare Means options is selected. See Statistical Details for Comparison Circles. Connect Means Connects the group means with a straight line. Mean of Means Draws a line at the mean of the group means. X-Axis proportional Makes the spacing on the x-axis proportional to the sample size of each level. See Mean Diamonds and X-Axis Proportional. Points Spread Spreads points over the width of the interval Points Jittered Adds small spaces between points that overlay on the same y value. The horizontal adjustment of points varies from 0.375 to 0.625 with a 4*(Uniform-0.5)5 distribution. Matching Lines (Only appears when the Matching Column option is selected.) Connects matching points. Matching Dotted Lines Only appears when the Matching Column option is selected.) Draws dotted lines to connect cell means from missing cells in the table. The values used as the endpoints of the lines are obtained using a two-way anova model. Histograms Robust Mean Lines (Appears only when Robust Fit is selected.) Draws a line at the robust mean of each group.