Trigonometry Demystified by Stan Gibilisco

Author:Stan Gibilisco
Language: eng
Format: epub, pdf
Publisher: McGraw-Hill Education
Published: 2012-12-05T05:00:00+00:00

The proportional error Dp equals the absolute error divided by the actual value of the quantity. We have

The proportional error percentage D% equals 100 times Dp. Mathematically,

Error values and percentages turn out positive if , and negative if . If the measured value is too large, we have a positive error; if the measured value is too small, we have a negative error. Sometimes the possible error or uncertainty in a situation is expressed as “plus or minus” a certain number of units or percent. We indicate this state of affairs by writing a plus-or-minus sign (±) before the error figure.

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