Paano Kalkulahin si Margin of Error
Ano ang Margin of Error?
The margin of error (MOE) quantifies the uncertainty in a survey result. A poll showing 60% support with ±4% MOE means the true population value likely falls between 56–64% at the stated confidence level. MOE shrinks as sample size grows.
Step-by-Step na Gabay
- 1MOE = z × √(p(1-p)/n)
- 2z = 1.96 for 95% confidence
- 3p = observed proportion · n = sample size
- 4MOE is the ± value reported alongside poll results
Mga Nalutas na Halimbawa
Input
n=1,000 · p=0.5 · 95% confidence
Resulta
MOE = ±3.1%
1.96×√(0.25/1000)=0.031
Input
n=400 · p=0.5 · 95% confidence
Resulta
MOE = ±4.9%
Halving n roughly doubles the MOE
Handa nang kalkulahin? Subukan ang libreng Margin of Error Calculator
Subukan ito sa iyong sarili →