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We have graphically verified the consistency of the corrected results obtained in the different subranges that overlap. The values of in each subrange (Sj) are several orders of magnitude higher than the values of the applied corrections. For this reason, before drawing the diagrams, we resorted to shifting each value by the same quantity, namely , an adjustment that does not affect the validity of the test. The corrected (and adjusted) result then becomes , where the difference is considered to be a number without uncertainty, is the sample mean, U is the extended uncertainty, U = k , which defines an interval having a level of confidence of approximately 95% for a normal distribution, with the standard uncertainty = and k = 2. The graphics created for the corrected results vs temperature demonstrate that the intervals of uncertainty overlap in all cases. By consequence, we can claim that the results obtained after the correction in the different subranges that overlap are consistent (they agree) within their uncertainties (calculated for a level of confidence of 95 %) [31,32]. The vertical lines on each chart mark the regions of temperature, with 6, 4, 3 and, respectively, 2 overlapping subranges (Ri, i = 1, 2, 3, 4). L − participating laboratory; T − calibrated thermometer.
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