Estimation of sample size
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- This topic has 6 replies, 6 voices, and was last updated 18 years, 3 months ago by
Rajanga Sivakumar.
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February 11, 2004 at 10:15 am #34539
How do we estimate the sample size for a given confidence level and standard deviation of proportions in case of a finite population ?
0February 11, 2004 at 2:50 pm #95308Sample Size = Conf Level ^2 X(Proportion)(1-Proportion)/(0.5)^2
Prediction Error is assumed to be 0.5
0February 11, 2004 at 3:39 pm #95310It is actually the z value associated with the confidence level squared multiplied by (p*q)/(prediction error)^2, where q=(1-p)
0February 24, 2004 at 10:31 am #95988hi eric
sorry 4 gettin back so late. but would like to know if u have some proof or some more info on the formula given by u
tks
deepa
0February 24, 2004 at 5:28 pm #96003Deepa
See the discussion on this forum as minimum sample size . This may help you0February 25, 2004 at 6:16 am #96024Can one presume that the prediction error refers to the consumer’s risk (Beta) in choosing the sample size and that the producer’s risk (alpha) is given by 1- Confidence Level ?
TIA
Rajesh0February 25, 2004 at 12:32 pm #96028
Rajanga SivakumarParticipant@Rajanga-SivakumarInclude @Rajanga-Sivakumar in your post and this person will
be notified via email.Deepa,
You may try:
https://www.isixsigma.com/offsite.asp?A=Fr&Url=http://www.surveyguy.com/SGcalc.htm
Rajanga0 -
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