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Significant Figures: Precision in Measurements definitions

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  • Significant Figures
    Digits in a measurement that include all known values plus one estimated digit, reflecting the precision of the measurement.
  • Precision
    The degree to which repeated measurements under unchanged conditions show the same results, indicated by the number of significant figures.
  • Measurement
    A value obtained using instruments, consisting of all certain digits and one estimated digit to reflect accuracy.
  • Decimal Point
    A symbol used to separate the whole number part from the fractional part, affecting how significant figures are counted.
  • Nonzero Number
    Any digit from 1 to 9, always considered significant when counting significant figures in a value.
  • Estimate
    An additional digit added to a measurement based on judgment, representing uncertainty beyond the smallest marked unit.
  • Hash Mark
    A line or marking on a measuring tool indicating a specific value or interval for reading measurements.
  • Uncertainty
    The doubt associated with the last digit of a measurement, arising from limitations of the measuring instrument.
  • Known Number
    A digit in a measurement that is certain and directly read from the measuring instrument.
  • Eyeball Test
    A method of estimating one additional digit beyond the smallest marked unit when reading a measurement.
  • Data Analysis
    The process of interpreting measurements, where the number of significant figures impacts the reliability of conclusions.
  • Beaker
    A common laboratory container with volume markings, used for measuring liquids and applying significant figures.
  • Measuring Tape
    A flexible tool marked with units, used to determine length and apply the rules of significant figures.
  • Detail
    The amount of information conveyed by a measurement, increased by including more significant figures.