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Screensize: 640 x 480 800 x 600 1024 x 768 1280 x 1024 UserName: Password: Anti-Spam Code: Format Mode: Basic  Help  Prompt  Format: Font Andale Mono Arial Arial Black Book Antiqua Century Gothic Comic Sans MS Courier New Georgia Impact Lucida Console Script MT Bold Stencil Tahoma Times New Roman Trebuchet MS Verdana   Size 1 2 3 4 5 6   Color Black Red Yellow Pink Green Orange Purple Blue Beige Brown Teal Navy Maroon LimeGreen Message: * HTML is OFF * Forum Code is ON Smilies [quote][i]Originally posted by tony_lincoln[/i] [br]Hi, I have two groups of data: In every group there are 29 subgroups, in every subgroup, there are 1-15 numbers ranged from 0 to 80. The subgroups are DEPENDENT of each other. I wanna compare whether these two groups are significantly different without mixing all numbers in subgroups together. How should I use Origin to do the analysis? To make one example of this question, suppose: 2 groups, in every group there are only 3 subgroups, in every subgroup there are at most 5 numbers ranged from 0 to 80: group 1: subgroup a: 0.1, 23, 44, 12.5, 5.0 subgroup b: 24 subgroup c: 23, 44 group 2: subgroup a: 32, 45, 5.5, 6.7 subgroup b: 22.2, 45, 56, 52, 10 subgroup c: 2.2, 4.5, 6.1, 32 In every group, the 3 subgroups are not independent of each other. How can I compare whether group 1 and 2 are significantly different from each other, without mixing the 8 numbers in group 1 together and mixing the 13 numbers in group 2 together? Sorry I know this question is kind of long. I apologize for the time you have to take to read through it. Thank you very much Tony [/quote]   Check here to include your profile signature. Check here to subscribe to this topic.