I am conducting a household survey in Nepal. I am a bit confused in regards to confidence level and conficence interval. My query is does the total of confidence level and confidence interval be 100%? If one is 95%, then is it that the other is 5%? Can we determine sample size with 99% confidence level and 5% confidence interval?

Regards

Deepak

Well, “ideal” is relative. But, with a population that small: A sample of 332 would give you a 3% MoE @95% CL.

]]>“These terms simply mean that if the survey were conducted 100 times, the data would be within a certain number of percentage points above or below the percentage reported in 95 of the 100 surveys.”

This implies that the sample percentages would be within the margin of error 95% of the time. That’s not quite right. It should be:

“These terms simply mean that if the survey were conducted 100 times, the actual percentages of the larger population would be within a certain number of percentage points above or below the percentage reported in 95 of the 100 surveys.”

Meaning that the actual population percentages should fall within the margin of error 95% of the time.

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