Hi, How can I make a t-test if I haven't got all data set but I know the numbers of subjects for each group, the mean and di standard deviation for each group? Thanks Angelo Scozzarella
On 12/08/2008, at 3:11 AM, Angelo Scozzarella wrote:> How can I make a t-test if I haven't got all data set but I know > the numbers > of subjects for each group, the mean and di standard deviation for > each group?Use your head. I.e. do the same thing you'd do if you weren't using a computer, but get R to do the arithmetic for you. cheers, Rolf Turner ###################################################################### Attention:\ This e-mail message is privileged and confid...{{dropped:9}}