Statistic expressing the amount of random sampling error in a survey's results
This article is about the statistical precision of estimates from sample surveys. For observational errors, see Observational error. For safety margins in engineering, see Factor of safety. For tolerance in engineering, see Engineering tolerance. For the eponymous movie, see Margin for error (film).
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Probability densities of polls of different sizes, each color-coded to its 95% confidence interval (below), margin of error (left), and sample size (right). Each interval reflects the range within which one may have 95% confidence that the true percentage may be found, given a reported percentage of 50%. The margin of error is half the confidence interval (also, the radius of the interval). The larger the sample, the smaller the margin of error. Also, the further from 50% the reported percentage, the smaller the margin of error.
The margin of error is a statistic expressing the amount of random sampling error in the results of a survey. The larger the margin of error, the less confidence one should have that a poll result would reflect the result of a census of the entire population. The margin of error will be positive whenever a population is incompletely sampled and the outcome measure has positive variance, which is to say, whenever the measure varies.
The term margin of error is often used in non-survey contexts to indicate observational error in reporting measured quantities.
Margin for Error is a 1943 American drama film directed by Otto Preminger. The screenplay by Lillie Hayward and Samuel Fuller is based on the 1939 play...
random sample of 1,000 people has marginof sampling errorof ±3% for the estimated percentage of the whole population. A 3% marginoferror means that if...
Party of Canada depending on the poll. In cases when linked poll details distinguish between the marginoferror associated with the total sample of respondents...
the marginoferror created by rounding to the nearest whole number or any marginoferror from methodological sources. Most online polls—because of their...
standard error (SE) of a statistic (usually an estimate of a parameter) is the standard deviation of its sampling distribution or an estimate of that standard...
sense. Marginoferror Propagation of uncertainty Ratio estimator Sampling (statistics) Wikimedia Commons has media related to Sampling error. Sarndal...
Profit margin is a financial ratio that measures the percentage of profit earned by a company in relation to its revenue. Expressed as a percentage, it...
Morgan, and by Curia (Taxpayers' Union). The sample size, marginoferror and confidence interval of each poll varies by organisation and date. The current...
pollsters. Those who win outright are in bold. Those that are within the marginoferror are in italics. Pollsters usually do face-to-face interviews on respondents...
would imply a marginof 0.05 m (the last significant place is the tenths place), while a recording of 843 m would imply a marginoferrorof 0.5 m (the last...
years later with a 2.78% marginof victory as the former lost the presidency to the latter. However, it was the worst margin for a victorious Democrat...
the state again by 3.36 percentage points, an improvement from his 1.2% margin in 2016, despite Trump losing re-election nationwide and polls pointing...
Governor Jim Justice. Due to the state's heavy partisan lean, the narrow margin by which Manchin was re-elected in 2018 (even amidst a national Democratic...
parts of the Democratic Party's legislative agenda. Prospective polling showed Sinema trailing all of her potential challengers by wide margins, with...
relative to the marginoferror (×2 for spread). If the poll is within the doubled marginoferror, both colors are used. If the marginoferror is, for example...
won one of the two districts. Trump won the other district, which also elected a Democrat. Biden carried the Pine Tree State by a 9.07% margin over Trump...
the same poll, of samples of just over 500 each and then merged them together, questions should be borne in mind as to the marginoferror for what is essentially...
and DeSantis the Republican primary. The close margin mandated a machine recount, which had a deadline of November 15, 2018. After the recount was complete...
solidly blue state, with Biden winning 60.87% of the vote to Trump's 37.74%, a Democratic victory marginof 23.13%. Due to a decrease in third-party voting...
Ohio with 53.27% of the vote, defeating Biden who received 45.24% of the vote, a marginof 8.03%. Trump won by nearly the same margin that he defeated...
California on election day, earning 63.5% of the vote and a marginof 29.2% over Trump. Biden earned the highest percentage of the vote in the state for any candidate...
May 2024. "2024 Lok Sabha polls: Gujarat BJP chief CR Patil seeks 500,000-margin win for candidates in state". "Gujarat polls are "semi-finals" for 2024...
narrowly decided in every presidential election since 2008 by less than a 4% margin each time, when Barack Obama very narrowly carried the state and became...
Fox, Joey (March 5, 2024). "Tammy Murphy wins Bergen convention by big margin after spirited challenge from Andy Kim". New Jersey Globe. Retrieved March...
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