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ESL forum > Ask for help > accuracy vs precision    

accuracy vs precision



Pedro14
Spain

accuracy vs precision
 
Hi there,
 
Today a student of mine has asked me about the difference between the nouns above. I didn �t know so I looked them up in the dictionary and somehow, their meanings overlap. "The quality of being correct". May anyone be so kind to help me explain the difference between them- of there is any? 
 
Thanks in advance. 

5 Apr 2016      





serzt
Turkey

http://www.diffen.com/difference/Accuracy_vs_Precision


https://www.youtube.com/watch?v=8Cl5CeiT7hU

5 Apr 2016     



yanogator
United States

Accuracy deals with how close to the "correct" number you are.
 
Precision deals with how finely your number is measured.
 
If I say that my height is 70.0831 inches, that is a very precise measurement (to a ten-thousandth of an inch).
 
Since my height is actually more like 70.5 inches, then the 70.0831 is not very accurate.
 
I hope this helps.
 
Bruce 

5 Apr 2016