{"id":1811,"date":"2024-11-16T02:50:02","date_gmt":"2024-11-15T19:50:02","guid":{"rendered":"https:\/\/www.tneutron.net\/elektro\/?p=1811"},"modified":"2024-11-12T08:21:51","modified_gmt":"2024-11-12T01:21:51","slug":"accuracy-and-precision","status":"publish","type":"post","link":"https:\/\/www.tneutron.net\/elektro\/accuracy-and-precision\/","title":{"rendered":"Accuracy and Precision"},"content":{"rendered":"<p><span class=\"notranslate\">Accuracy stated conformance level measurement results to the price or the actual value;<\/span> <span class=\"notranslate\"> moderate accuracy states the degree of similarity in a group of measurement or number of instruments.<\/span> <span class=\"notranslate\"> Suppose we compare two voltmeter with models and from the same manufacturer.<\/span> <span class=\"notranslate\"> It should be the second voltmeter can be read with the same accuracy, but can also occur both the accuracy of the voltmeter can berbea altogether.<\/span><\/p>\n<p><span class=\"notranslate\"> This can occur because of a system error in one of the voltmeter, eg changing tahaman sasalah one series in the voltmeter.<\/span> <span class=\"notranslate\"> Voltmeter to determine which ones produce a measuring error, required a comparison against a standard voltmeter (calibration).<\/span> <span class=\"notranslate\"> The accuracy consists of two characteristics, namely (1) the appropriateness, and (2) the number of significant digits of a measurement result.<\/span><\/p>\n<p><span class=\"notranslate\"> Conformity is a requirement that is necessary but not sufficient to obtain the accuracy, suppose a prisoner 1.384572 mega-ohms measured by ohmmeter consistently and repeatedly gives the results of measurements of 1.4 mega-ohms.<\/span> <span class=\"notranslate\"> The question is whether these measures have read the actual price?<\/span> <span class=\"notranslate\"> Of course not, because we still need to discuss the meaning of numbers of the measurement results.<\/span><\/p>\n<p><span class=\"notranslate\"> The figures, which means it provides actual information about the greatness and the accuracy of the measurement.<\/span> <span class=\"notranslate\"> The more meaningful numbers, the accuracy of measurement becomes greater.<\/span> <span class=\"notranslate\"> For example, if the value of a prisoner is 68 ohm, this means that these prisoners will be closer than 67 ohm 68 ohm or 69 ohm.<\/span> <span class=\"notranslate\"> Furthermore, if the mentioned resistance value is 68.0 ohms, meaning the resistance value should be more closer to 68.0 than 67.9 ohm ohm or 68.1 ohms.<\/span><\/p>\n<p><span class=\"notranslate\">At 68 ohm there are two numbers that mean, being in custody 68.0 ohms, which means there are three numbers, which have a higher accuracy than the prisoners 68 ohms.<\/span> <span class=\"notranslate\"> It was customary to record a measurement result by using all the numbers that we believe is closest to the actual price.<\/span> <span class=\"notranslate\"> For example, if a voltmeter read 117.1 volts;<\/span> <span class=\"notranslate\"> then this indicates that the assessment of the most well according to observers is closer to 117.1 volts than 117.0 volts or 117.2 volts.<\/span><\/p>\n<p><span class=\"notranslate\"> Another way to express the results of measurements are using a summary of possible errors, so it can be written as 117.1 \u00b1 0.05 volts.<\/span> <span class=\"notranslate\"> Example: A series of voltage measurements are performed consistently by the four observers provides measurement data: 117.02 volt, volt 117.11, 117.08 volts, and 117, 03 volts.<\/span> <span class=\"notranslate\"> Determine (1) the average value, and (2) rangkumankesalahan measuring.<\/span> <span class=\"notranslate\"> completion:<\/span><br \/>\n<a href=\"https:\/\/www.tneutron.net\/elektro\/wp-content\/uploads\/sites\/2\/2016\/08\/image-8.png\"><img loading=\"lazy\" decoding=\"async\" title=\"image\" src=\"https:\/\/www.tneutron.net\/elektro\/wp-content\/uploads\/sites\/2\/2016\/08\/image_thumb-6.png\" alt=\"image\" width=\"392\" height=\"51\" border=\"0\" \/><\/a><\/p>\n<p><span class=\"notranslate\"> Summary of Errors (mak) = Umak &#8211; Urata with an average of 117.11 to 117.06 = 0.05 V<\/span><br \/>\n<span class=\"notranslate\"> Summary of Errors (min) = Urata average &#8211; Umin = 117.06 to 117.02 = 0.04 V<\/span><br \/>\n<span class=\"notranslate\"> Summary of average error = \u00b1 0.045 = \u00b1 0.05 V<\/span><\/p>\n<p><span class=\"notranslate\"> It often happens that the number of digits is not necessarily express the precision of measurement.<\/span> <span class=\"notranslate\"> Large numbers with anka-zeros before the decimal point is often used in the assessment of the number of people or money.<\/span> <span class=\"notranslate\"> For example, if the population of a city is reported in the six figures, namely 380,000, this means that the actual population is between 379 000 and 380 001 which is in six figures mean.<\/span><\/p>\n<p><span class=\"notranslate\"> But even in the six figures mean not 370,000 or 390,000 because the population is not closer to the figure of 380,000.<\/span> <span class=\"notranslate\"> Form of technical writing is more appropriate to use powers of ten, eg 38 x 104 or 3.8 x 105. Here, the population of just thoroughly until two significant figures.<\/span> <span class=\"notranslate\"> Uncertainty caused by the zeros on the left of the decimal point are usually treated with a mark of scientific writing is by using powers of ten.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Accuracy stated conformance level measurement results to the price or the actual value; moderate accuracy states the degree of similarity<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"colormag_page_container_layout":"default_layout","colormag_page_sidebar_layout":"default_layout","footnotes":""},"categories":[2232],"tags":[2347,2355,2352,2351,2353,2354,2350,2349,2356,2348],"class_list":["post-1811","post","type-post","status-publish","format-standard","hentry","category-english","tag-accuracy-and-precision","tag-accuracy-and-precision-activity","tag-accuracy-and-precision-chemistry","tag-accuracy-and-precision-examples","tag-accuracy-and-precision-for-long-range-shooting","tag-accuracy-and-precision-formula","tag-accuracy-and-precision-have-the-same-meaning","tag-accuracy-and-precision-lab","tag-accuracy-and-precision-quiz","tag-accuracy-and-precision-worksheet"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - 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