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level: General

Questions and Answers List

level questions: General

QuestionAnswer
Define Random Error​An error in a measurement caused by factors that change from one measurement to another​
What is a measurmentThe value taken as the difference between the judgements of two values​ of a measuring instrument
What is a Systematic Error​?A consistent difference between the measured values and true values​
How would you describe the results for an experimet to be repeatableThe experimenter repeats the experiment and gets consistent results​
For an experiment to be repeatable what would you say about the results of other experiementsOther experimenters get similar results ​
Define Accuracy​ in the context of scienceResult is close to the true value (accepted value)​
Define precision​ in the context of scienceMultiple readings are numerically close together​
Define Resolution​​ in the context of scienceThe smallest increment of the measuring instrument ​
What is a ReadingThe values found from a single judgement when using a piece of equipment​
Whats absolute uncertainty?Absolute uncertainty tells you how large the uncertainty of a value is, usually represented as a fraction OR its the range of all the possible values due to the accuracy of the measurement
Define the percentage uncertaintySimple: Absolute uncertanty as a percentage Descriptive: Absolute uncertainty tells you how large the uncertainty of a value is, usually represented as a percentage OR its the range of all the possible values due to the accuracy of the measurement
When adding / subtracting data what mathematical operation is done to the uncertainity, and what type of uncertainity is it?Add absolute uncertainities
When multiplying/ dividing data what mathematical operation is done to the uncertainity, and what type of uncertainity is it?Add percetage uncertanties
When raising to a power, what mathematical operation is done to the uncertainity, and what type of uncertainity is it?MULTIPLY PERCENTAGE UNCERTAINTY BY POWER
How do u calculate the percentage uncertainty of the mean?((0.5 X range) / mean) X 100
Define an errorDifference between the measured value and the true value
Define uncertainityRange in which the true value can lie within