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------- Additional comments from [EMAIL PROTECTED] Tue Apr 24 19:41:02 +0000 2007 ------- > In statistics, there is no use to display only one set of values. > The point is to compare several sets of data to visualize > the distribution graphically. Usually, we want to create some confidence interval (CI). The 95% CI is the most useful one. So creating 2 horizontal lines that delimit the 95% CI is the better approach. Of course, we could add a parameter to specify the size of the CI. Selecting 68% will generate the (-1 SD; +1 SD) interval that is so accustomed in the literature (the "error bars"), though dedicated statistician rarely use it. The http://addictedtor.free.fr/graphiques/RGraphGallery.php?graph=65 graphics display a very complex confidence interval. Of course, in our example, the lines delimiting the 95% CI would be horizontal (differing from the very complex lines in the previous graph). AND, because there are really lines drawn that look like grid lines, you could more easyly compare the distribution of the individual values. See my attached graphic. That's how I imagine it. --------------------------------------------------------------------- Please do not reply to this automatically generated notification from Issue Tracker. Please log onto the website and enter your comments. http://qa.openoffice.org/issue_handling/project_issues.html#notification --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
