LISTSERV at the University of Georgia
Menubar Imagemap
Home Browse Manage Request Manuals Register
Previous messageNext messagePrevious in topicNext in topicPrevious by same authorNext by same authorPrevious page (September 2005)Back to main SPSSX-L pageJoin or leave SPSSX-L (or change settings)ReplyPost a new messageSearchProportional fontNon-proportional font
Date:         Thu, 22 Sep 2005 09:15:29 -0600
Reply-To:     Adrian Musters <>
Sender:       "SPSSX(r) Discussion" <SPSSX-L@LISTSERV.UGA.EDU>
From:         Adrian Musters <>
Subject:      Standard Error
Content-Type: text/plain; charset=US-ASCII

Hi everyone,

I did a one-way ANOVA in SPSS 13 with a Tukey HSD Post-Hoc test. In the output I noticed that the Standard Error in the Multiple Comparisons table was 17.30069 for each and every comparison. I am comparing the amount of foraging in 4 different types of grass, each with 5 observations. My understanding is that the Standard Error is calculated by dividing the Standard Deviation by the square root of the number of observations - SD/sqrt(N)

Is the standard deviaiton that is used the standard deviation of the whole group (N=20)? Mine is 37.44094 . So I'm wondering about the calculation. 37.44094 / sqrt (5) = 16.7440974. Am I wrong about the calculation for the SE? If not, is there anyone who is able to explain the discrepancy of .55 in the two SEs?

Thanks in advance, Adrian

Back to: Top of message | Previous page | Main SPSSX-L page