Enter N Enter n Enter Confidence Interval %

##### How does the Confidence Interval of a Proportion Calculator work?
Free Confidence Interval of a Proportion Calculator - Given N, n, and a confidence percentage, this will calculate the estimation of confidence interval for the population proportion π including the margin of error. confidence interval of the population proportion
This calculator has 3 inputs.

### What 3 formulas are used for the Confidence Interval of a Proportion Calculator?

p^ = n/N
α = 1 - Confidence%
p^ - zscoreα * σp/√ p < p < p^ + zscoreα * σp/√p

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##### What 5 concepts are covered in the Confidence Interval of a Proportion Calculator?
confidence interval
a range of values so defined that there is a specified probability that the value of a parameter lies within it.
confidence interval of a proportion
the probability that a population parameter will fall between a set of values for a certain proportion of times.
margin of error
a statistic expressing the amount of random sampling error in the results of a survey.
σp + z-score
population
all the inhabitants of a particular town, area, or country.
proportion
n equation in which two ratios are set equal to each other
a/b = c/d