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It's the fraction of the entire population with a characteristic.
p^=xn\hat{p} = \frac{x}{n}p^=nx where xxx is successes, nnn is size.
ppp is a fixed parameter; p^\hat{p}p^ varies between samples.
p^±z×p^(1−p^)n\hat{p} \pm z \times \sqrt{\frac{\hat{p}(1-\hat{p})}{n}}p^±z×np^(1−p^)
It represents the proportion of a sample with a characteristic.
'zzz' is the Z-value for the desired confidence level.
Use point estimates or confidence intervals from p^\hat{p}p^.
The sample proportion is 0.60.60.6 or 60%60\%60%.
The confidence interval is (0.532,0.668)(0.532, 0.668)(0.532,0.668).
They help make predictions about populations from samples.
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