Can you provide an example of how to calculate the standard error of a sample proportion?

By: USER4586
30 Agustus 2025 Support 5 minutes
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Grade: Education Subject: Support
Can you provide an example of how to calculate the standard error of a sample proportion?
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Suppose a survey of 200 people finds that 60 of them prefer coffee. The sample proportion (p) is 60/200 = 0.3. The standard error (SE) is sqrt[(0.3 * (1 - 0.3)) / 200] = sqrt[(0.3 * 0.7) / 200] = sqrt[0.21 / 200] = sqrt[0.00105] ≈ 0.0324.
Answered on 30 Agustus 2025

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