Hello everyone, I hope I can get simple answers to these questions... I need to solve a couple of practical problems and I'm new to statistics...
1) Two samples of are given and I need to compare their means and variances. The distribution of the population is unknown. Can I use the F-test and the t-test? Is it necessary that the sample _means_ have a Gaussian distribution? Is it sufficient? Maybe I misunderstand something here... 2) I need to calculate the significance of correlation between two sequences. I would actually prefer to use randomization, but the sequences may be too short. Another option is to perform linear regression and calculate the significance of the slope using a t-test (?). When is it valid? Again, I'm looking for simple answers, if they exist... Thanks in advance! . . ================================================================= Instructions for joining and leaving this list, remarks about the problem of INAPPROPRIATE MESSAGES, and archives are available at: . http://jse.stat.ncsu.edu/ . =================================================================
