biostats : standard error of the mean vs. t-test - USMLE Forums
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#1
12-04-2010
 USMLE Forums Scout Steps History: Not yet Posts: 81 Threads: 51 Thanked 41 Times in 17 Posts Reputation: 40
biostats : standard error of the mean vs. t-test

Why is it not sufficient to calculate standard error of the mean? why is it sometimes necessary to calculate the probability of error via performing a t-test?

#2
12-04-2010
 USMLE Forums Guru Steps History: 1+CK+CS Posts: 339 Threads: 12 Thanked 426 Times in 143 Posts Reputation: 436
They are not related

T test is to compare two means of two populations is totally different from the standard error of the mean which is a measure of variation of each measurement from the mean.
 The above post was thanked by: schiwei (12-04-2010)
#3
08-25-2011
 USMLE Forums Master Steps History: 1+CK+CS+3 Posts: 1,357 Threads: 194 Thanked 3,269 Times in 881 Posts Reputation: 3279

Quote:
 Originally Posted by mary T test is to compare two means of two populations is totally different from the standard error of the mean which is a measure of variation of each measurement from the mean.
Actually when you do the test statistic (in this case, the t test), you are using the SEM as part of the formula in the denominator.

 Tags Biostatistics-Epidemiology

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