Gimme a C
CANON
Gimme a F
FUJI FLIM
Gimme a P
PENTAX
Which brand u prefer ?
陳綺貞 2010 [夏季練習曲] 巡迴演唱會 Cheer Concert 13 Nov 2010 MAX Pavilion@Singapore Expo
hey guys, if we have a small sample, but we know the population variance, do we still use t-test? or do we still stick to z-test?
variance known and n≥50, use Z-test
variance unknown and n≥50, use Z test, use unbiased estimate to find s^2
variance unknown and n<50, use t-test with n-1 deg of freedom and s^2 for unbiased estimate.
oh man if you still don't know this, go read up on your stats! testing questions are a giveaway!
eat. drink. shoot
OMG what are those.... haix. further maths students.... me c-maths also CMI liao xD
where are your notes? you should know these at the back of your head already!
CLT
CI
CI *THIS IS IMPORTANT!* use the correct "p" value! many candidates mix up the values to use!
Last edited by +evenstar; 2nd November 2006 at 10:34 PM.
eat. drink. shoot
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