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Module 1: The Central Science
Conversion Equations
Kelvin: K = °C+273
Fahrenheit: °F = (°C)1.8+32
Celsius: °C = (°F-32)/1.8
📏 Lesson 3: Uncertainty in Data
Accuracy and Precision
Accuracy = How close a measurement is to the accepted value
Precision = How close repeated measurements are to each other
Precise measurements can still be inaccurate!
Error and Percent Error
Experimental value: Measured during the experiment
Accepted value: True/correct value
Module 1: The Central Science 1
, Error:
Error = Experimental value - Accepted value
Always positive — only the size of the error matters.
Percent Error:
Scientists want to know what % of the accepted value the error represents.
Percent error: expresses error as a percentage of the accepted value
Percent Error = (Error ÷ Accepted Value) x 100
But to get % error in one go:
Module 1: The Central Science 2
Module 1: The Central Science
Conversion Equations
Kelvin: K = °C+273
Fahrenheit: °F = (°C)1.8+32
Celsius: °C = (°F-32)/1.8
📏 Lesson 3: Uncertainty in Data
Accuracy and Precision
Accuracy = How close a measurement is to the accepted value
Precision = How close repeated measurements are to each other
Precise measurements can still be inaccurate!
Error and Percent Error
Experimental value: Measured during the experiment
Accepted value: True/correct value
Module 1: The Central Science 1
, Error:
Error = Experimental value - Accepted value
Always positive — only the size of the error matters.
Percent Error:
Scientists want to know what % of the accepted value the error represents.
Percent error: expresses error as a percentage of the accepted value
Percent Error = (Error ÷ Accepted Value) x 100
But to get % error in one go:
Module 1: The Central Science 2
