# At confidence, how large a sample should be taken to obtain a margin of error of for the estimation of a population proportion

**URL:** <https://sorumatik.co/t/at-confidence-how-large-a-sample-should-be-taken-to-obtain-a-margin-of-error-of-for-the-estimation-of-a-population-proportion/3183>\
**Category:** Mathematics\
**Created:** [Kasım 6, 2022, 7:35ös UTC](https://sorumatik.co/t/at-confidence-how-large-a-sample-should-be-taken-to-obtain-a-margin-of-error-of-for-the-estimation-of-a-population-proportion/3183 "2022-11-06T19:35:40Z")\
**Posts on this page:** 2\
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**Author:** ![Dersnotu](https://sorumatik.co/user_avatar/sorumatik.co/dersnotu/32/3037_2.png) [@Dersnotu](https://sorumatik.co/u/Dersnotu)\
**Post date:** [Kasım 6, 2022, 7:35ös UTC](https://sorumatik.co/t/at-confidence-how-large-a-sample-should-be-taken-to-obtain-a-margin-of-error-of-for-the-estimation-of-a-population-proportion/3183/1 "2022-11-06T19:35:40Z")

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At confidence, how large a sample should be taken to obtain a margin of error of for the estimation of a population proportion? assume that past data are not available for developing a planning value for . round up to the next whole number.

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<div class="post-metadata">

**Author:** ![Dersnotu](https://sorumatik.co/user_avatar/sorumatik.co/dersnotu/32/3037_2.png) [@Dersnotu](https://sorumatik.co/u/Dersnotu)\
**Post date:** [Kasım 6, 2022, 7:47ös UTC](https://sorumatik.co/t/at-confidence-how-large-a-sample-should-be-taken-to-obtain-a-margin-of-error-of-for-the-estimation-of-a-population-proportion/3183/2 "2022-11-06T19:47:42Z")

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n=p.(p-1).(\frac{z\_\alpha /2}{E})^2

you can calculate the required size using the above formula