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# B1 Ch 3 Lesson 2

### Math and Science

TermDefinition
Estimate An approximation of a number based on reasonable assumptions.
Accuracy How close a measurement if to the true accepted value.
Precision How close a group of measurements are to each other.
Significant Figures All the digits in a measurement that have been measured exactly, plus one digit whose value has been estimated.
Percent Error A calculation used to determine how accurate, or close to the true value, an experimental value really is.
Mean The numerical average of a set of data.
Median The middle number in a set of data.
Mode The number that appears most often in a list of numbers.
Range The difference between the greatest value and the least value in a set of data.
Anomalous Data Data that do not fit with the rest of a data set.
Created by: Juchrin
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