Margin of Errorని ఎలా లెక్కించాలి

Margin of Error అంటే ఏమిటి?

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.

దశల వారీ గైడ్

1. 1MOE = z × √(p(1-p)/n)
2. 2z = 1.96 for 95% confidence
3. 3p = observed proportion · n = sample size
4. 4MOE is the ± value reported alongside poll results

పరిష్కరించిన ఉదాహరణలు