# Survey uncertainty with a given population proportion

1 year 9 months ago #149907
milanoleonardo created the topic: Survey uncertainty with a given population proportion
Hello!

I have to estimate the uncertainty of the result of a survey where there sample size was defined to have an uncertainty of 2.76%, based on p a p value of 0.5.

The 2.76% error is calculated assuming a 50% population proportion, which is a worst case scenario assumption:

size sample 1260
confidence interval 1.96 (95 percent)
proportion: 50.00% error 2.76%

The result of the survey is 4%: with this population proportion what would be the error?:

size sample 1260
confidence interval 1.96 (95 percent)
proportion (p): 4.9% error ????

Thank you!

1 year 9 months ago #149933 by Joffm
Joffm replied the topic: Survey uncertainty with a given population proportion
Hi, milanoleonardo,

Or do you want us to have a look into a statistic table?

Regards
Joffm

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1 year 9 months ago #149935 by holch
holch replied the topic: Survey uncertainty with a given population proportion
This forum is about Limesurvey, the survey software.

Your questions is rather for a statistics forum.

I'm not a LimeSurvey GmbH member. I answer at the LimeSurvey forum in my spare time. No support via private message.

1 year 9 months ago #149945
milanoleonardo replied the topic: Survey uncertainty with a given population proportion
I am sorry, I thought this was a forum on survey design

1 year 9 months ago #149946 by holch
holch replied the topic: Survey uncertainty with a given population proportion
But your question is rather about the results/outcome than the design of an online questionnaire or survey, right?

I'm not a LimeSurvey GmbH member. I answer at the LimeSurvey forum in my spare time. No support via private message.