margin of error

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Related to margin of error: confidence interval, standard error
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Noun1.margin of error - the margin required in order to insure safetymargin of error - the margin required in order to insure safety; "in engineering the margin of safety is the strength of the material minus the anticipated stress"
margin - an amount beyond the minimum necessary; "the margin of victory"
index - a numerical scale used to compare variables with one another or with some reference number
References in periodicals archive ?
The polling sample for the Democratic and the Republican primary consisted of 298 and 352 likely Florida voters, respectively, with a margin of error of +/-5.
The guidance systems of (the missiles delivered to the IRGC) today enjoy the capability of striking the targets with full precision and they have a margin of error below 5 meters," Dehqan said on the sidelines of a ceremony held to mark the mass-delivery of different ballistic missiles, including Qadr H, Qiam, Fateh 110 and Khalij-e Fars (Persian Gulf) missiles, as well as the Mersad air defense system to the Islamic Revolution Guards Corps (IRGC) and Khatam ol-Anbia Air Defense Base.
If the payoff in reducing our overall margin of error isn't large, why do this?
As far as approval of the president's handling of the economy, however, Obama's lead evaporates into a virtual tie, considering the margin of error.
However, Norton's legal team had his latest sample sent to a forensic laboratory which concluded that the reading should have been lower and that a margin of error of around ten per cent existed in the equipment used to test the riders, the Lion Alcolmeter SD-40, of which the BHA had previously been unaware.
While the American Community Survey is a great source of detailed information about Montana's population, users must be aware that any estimates have a margin of error, some quite large.
The new Ibope poll surveyed 3,010 people on Friday and Saturday and had a 2-point margin of error.
When comparing across samples, the margin of error for the difference is plus or minus 4 percentage points.
Managers and executives in the basic materials segments may afford some margin of error when markets are this good, but the margin is still slim.
Young explains that in many cases where districts are making AYP it metals more students are encouraged to take the yearly tests to determine AYP and/or more states are using confidence intervals, or a margin of error, so that students near the proficiency cusp are considered proficient.
Most of us are familiar with the formula for the mean's interval during an election season, when the media talk of polls and their respective predictive ability within a plus or minus margin of error.
Often accompanying the discussion of the poll results is a statement describing the accuracy of the poll's estimates, which ordinarily reads something like, "The margin of error is 3 percentage points with a 95% level of confidence.