Error Margin Wikipedia
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engineering, see Tolerance (engineering). For the eponymous movie, see Margin for error (film). The top portion charts probability density against actual percentage, showing the relative probability that the actual percentage is realised, based on the sampled percentage. In the bottom portion, each margin call wikipedia line segment shows the 95% confidence interval of a sampling (with the margin of error on
Operating Margin Wikipedia
the left, and unbiased samples on the right). Note the greater the unbiased samples, the smaller the margin of error. The margin of contribution margin wikipedia error is a statistic expressing the amount of random sampling error in a survey's results. It asserts a likelihood (not a certainty) that the result from a sample is close to the number one would get if the
How Is Margin Of Error Calculated In Polls
whole population had been queried. The likelihood of a result being "within the margin of error" is itself a probability, commonly 95%, though other values are sometimes used. The larger the margin of error, the less confidence one should have that the poll's reported results are close to the true figures; that is, the figures for the whole population. Margin of error applies whenever a population is incompletely sampled. Margin of error is often used in non-survey contexts margin of error definition to indicate observational error in reporting measured quantities. In astronomy, for example, the convention is to report the margin of error as, for example, 4.2421(16) light-years (the distance to Proxima Centauri), with the number in parentheses indicating the expected range of values in the matching digits preceding; in this case, 4.2421(16) is equivalent to 4.2421 ± 0.0016.[1] The latter notation, with the "±", is more commonly seen in most other science and engineering fields. Contents 1 Explanation 2 Concept 2.1 Basic concept 2.2 Calculations assuming random sampling 2.3 Definition 2.4 Different confidence levels 2.5 Maximum and specific margins of error 2.6 Effect of population size 2.7 Other statistics 3 Comparing percentages 4 See also 5 Notes 6 References 7 External links Explanation[edit] The margin of error is usually defined as the "radius" (or half the width) of a confidence interval for a particular statistic from a survey. One example is the percent of people who prefer product A versus product B. When a single, global margin of error is reported for a survey, it refers to the maximum margin of error for all reported percentages using the full sample from the survey. If the statistic is a percentage, this maximum margin of error can be calculated as the radius of the confidence interval for a reported percentage of 50%. The margin of error has been described as an "absolute"
its contents. Please consider expanding the lead to provide an accessible overview of all important aspects of the article. Please discuss this issue
Margin Of Error Formula
on the article's talk page. (December 2014) Margin for Error US Theatrical
Margin Of Error Definition Ap Gov
Poster Directed by Otto Preminger Produced by Ralph Dietrich Written by Lillie Hayward Samuel Fuller Based on the margin of error definition math play by Clare Boothe Luce Starring Joan Bennett Milton Berle Otto Preminger Music by Leigh Harline Cinematography Edward Cronjager Edited by Louis R. Loeffler Distributed by 20th Century Fox Release https://en.wikipedia.org/wiki/Margin_of_error dates February10,1943(1943-02-10) Running time 74 minutes Country United States Language English 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 of the same title by Clare Boothe Luce. Contents 1 Plot 2 Cast 3 Sources 4 Production 5 Critical reception 6 References https://en.wikipedia.org/wiki/Margin_for_Error 7 External links Plot[edit] When police officer Moe Finkelstein (Milton Berle) and his colleague Officer Salomon are ordered to serve as bodyguards to German consul Karl Baumer (Otto Preminger) by the mayor of New York City, Finkelstein turns in his badge, convinced he has to quit the service because the man is a Nazi. Capt. Mulrooney, who appointed them to this job, tells Moe that although the mayor personally is opposed to Adolf Hitler and his regime, the mayor is responsible for the safety of everybody, and he feels that through this Job Finkelstein can show them the difference between their system and the Nazi one. Moe quickly discovers Baumer is in trouble with Berlin for having squandered money intended to finance sabotage. His secretary, Baron Max von Alvenstor (Carl Esmond), has become disenchanted with his boss and refuses to delay the delivery of a damaging financial report to Berlin. Baumer's Czechoslovakian wife, Sophia, confesses to Moe she loathes her husband and married him only to secure her father's release from prison. Also at odds with Baumer is Otto
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margin, free margin, normal skin margin, and normal tissue margin, usually refers to the visible normal tissue or skin margin that is removed with the surgical excision of a tumor, growth, or malignancy. Contents 1 Definition 2 Associated errors and recurrence rate 3 References 4 Further reading Definition[edit] Surgical margin in a surgery report defines the visible margin or free edge of "normal" tissue seen by the surgeon with the naked eye. Surgical margin as read in a pathology report defines the histological measurement of normal or unaffected tissue surrounding the visible tumor under a microscope on a glass mounted histology section.[1][2] A "narrow" surgical margin implies that the tumor exists very close to the surgical margin, and a "wide" surgical margin implies the tumor exists far from the cut edge or the surgical margin. Narrow surgical margin using the bread loafing technique suggests that residual cancer might be left due to false negative error. A surgeon often will perform a second surgery if a narrow surgical margin is noted on a pathology report. Associated errors and recurrence rate[edit] This determination is made with the full understanding of "false negative error" intrinsic in the bread loafing technique of histology (also known as POMA - a term used by the NCCN).[3] The higher the false negative error is, the higher the recurrence rate of a cancer or tumor at the surgical margin. This is due to the misreading of a pathology specimen as being clear of residual tumor, when there is actually residual tumor left where the specimen was not cut and mounted on the histology slide. The "false negative error" is very low in the CCPDMA method of histology processing, and can be very high in the bread loafing (POMA) method of histology processing.[3] In the bread loafing method of processing, one will note a high false negative error rate with narrow surgical margin; and one will note a low false negative error with a wide surgical margin[4] Surgical margin has a much less significant effect on the false negative error rate of CCPDMA methods, allowing the surgeon to routinely use very narrow surgical margins (1 to 2mm for non-melanoma skin cancer).[4] References[edit] ^ Maloney, ME., et al. Surgical Dermatopathology. Blackwell Science, 1999. pp. 107-121. ^ Maxwell, JH; Thompson, LD; Brandwein-Gensler, MS; Weiss, BG; Canis, M; Purgina, B; Prabhu, AV; Lai, C; Shuai, Y