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Degrees of freedom in statistics (for ttest). I'm studying the sizes of bones which form in the eye of reptiles (scleral ossicles). I want to know if different "groups" of bones differ in size. I measured the size of each bone 12 timess  once in the left eye and once in the right eye of each embryo. When using stats should I use 12 df (because I made 12 measurements) or 6 df (because I used 6 different embryos)? Thanks!!!
 one year ago
 one year ago
Degrees of freedom in statistics (for ttest). I'm studying the sizes of bones which form in the eye of reptiles (scleral ossicles). I want to know if different "groups" of bones differ in size. I measured the size of each bone 12 timess  once in the left eye and once in the right eye of each embryo. When using stats should I use 12 df (because I made 12 measurements) or 6 df (because I used 6 different embryos)? Thanks!!!
 one year ago
 one year ago

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