Random Errors Flashcards
What’s an accurate measurement
One that is Close to the true value
How should you read a thermometer
You should read at eye level with the thermometer
Define parallax error
An error that occurs when measurements an NOT taken at eye level
State the word :
An incorrect reading because the scientist was not on eye level
Parallax error
Define random error
An error made by the person taking the measurements
What can a random error cause
Random variations in our readings
How can parallax error be overcome
Using a digital thermometer
How can we reduce the effects of random errors
By repeating the experiment and calculating the mean
What’s a systematic error
The results differ by an amount for each value given
What’s a zero error
When a piece of equipment gives a reading that isn’t zero when it’s meant to be zero
What’s the precision of a measurement
How close the values are to the mean
How is range and precision correlate
The smaller the range the better the precision of the readings
What’s the definition of uncertainty
Not being certain of the accurate value
What’s the formula for uncertainty
Range
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What do we place before the uncertainty value
What does the uncertainty value tell us
How far away ( + or - ) the value is from the true value
