Accuracy vs Precision

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Bita Ghanei 1F
Posts: 60
Joined: Thu Feb 28, 2019 12:15 am

Accuracy vs Precision

Postby Bita Ghanei 1F » Tue Oct 08, 2019 10:17 pm

Hi there!
Could someone clarify the difference between accuracy and precision?

Pegah Nasseri 1K
Posts: 100
Joined: Wed Feb 27, 2019 12:15 am

Re: Accuracy vs Precision

Postby Pegah Nasseri 1K » Tue Oct 08, 2019 10:20 pm

Accuracy is how close your measured values are to the actual, correct value. Precision is how close your measured values are to each other. Your results in a lab are accurate if your data matches the actual value of whatever you measured. Your results are precise if the measurements in your different trials are close to each other and fall within the same range.

Jamie Lee 1F
Posts: 106
Joined: Fri Aug 09, 2019 12:16 am

Re: Accuracy vs Precision

Postby Jamie Lee 1F » Tue Oct 08, 2019 11:27 pm

I liked the dartboard example that Dr. Lavelle used- in that higher accuracy would mean that the darts would hit the bullseye, and higher precision would mean that darts would hit the same spot (regardless of position) again and again.

Arvind 4G
Posts: 51
Joined: Thu Jul 11, 2019 12:17 am
Been upvoted: 1 time

Re: Accuracy vs Precision

Postby Arvind 4G » Thu Oct 10, 2019 10:57 am

Accuracy is how close a value is to the accepted value while precision is how consistent you are with getting results, regardless if they are accurate or not. Hope this helps!

Yazmin Bocanegra 3L
Posts: 51
Joined: Thu Jul 25, 2019 12:17 am

Re: Accuracy vs Precision

Postby Yazmin Bocanegra 3L » Thu Oct 10, 2019 8:56 pm

Accuracy is how close you are to the true value, while precision is how consistent your results are in relation to each other. For example, you can keep getting similar results that are all far off from the true value (this is good precision with poor accuracy). Hope this helps!

305376058
Posts: 35
Joined: Thu Jul 11, 2019 12:17 am

Re: Accuracy vs Precision

Postby 305376058 » Sun Oct 13, 2019 9:23 pm

Accuracy cares about how close a measurement taken is to some accepted, agreed upon value. Precision, however, refers to how reproducible a measurement is (in other words, when measuring something, do you get around the same value each time). Precision does not care about an accepted value for the item being measured.

Eesha Chattopadhyay 2K
Posts: 104
Joined: Fri Aug 09, 2019 12:16 am

Re: Accuracy vs Precision

Postby Eesha Chattopadhyay 2K » Sun Oct 13, 2019 9:35 pm

Accuracy is how close your value is to the actual value while precision are multiple values close to each other regardless of the actual value.

Kaylee Clarke 1G
Posts: 103
Joined: Fri Aug 30, 2019 12:15 am

Re: Accuracy vs Precision

Postby Kaylee Clarke 1G » Sun Oct 13, 2019 9:44 pm

Precision has more to be with consistency in one area, even if not the bullseye as Professor Lavelle discussed, and accuracy is about the reaching the goal, or bullseye.

AGaeta_2C
Posts: 112
Joined: Wed Sep 18, 2019 12:21 am

Re: Accuracy vs Precision

Postby AGaeta_2C » Sun Oct 20, 2019 11:22 pm

Accuracy is the proximity of your value to the actual value. Precision is the closeness of all your values. Your value is more accurate if its closer to the actual value. Your values are precise if they're all relatively close to each other.

Eugene Chung 3F
Posts: 142
Joined: Wed Nov 15, 2017 3:03 am

Re: Accuracy vs Precision

Postby Eugene Chung 3F » Sun Oct 20, 2019 11:24 pm

Image
This image should help!

CalvinTNguyen2D
Posts: 102
Joined: Thu Jul 25, 2019 12:16 am

Re: Accuracy vs Precision

Postby CalvinTNguyen2D » Sun Oct 20, 2019 11:42 pm

Accuracy reflects how close your measured values are to the true value, while precision reflects how close together your measurements were! Precision doesn't necessarily have to be close to the true value, just closely grouped together.

HanaAwad_4B
Posts: 45
Joined: Fri Aug 30, 2019 12:18 am

Re: Accuracy vs Precision

Postby HanaAwad_4B » Sun Oct 20, 2019 11:57 pm

Accuracy is how close you are to the actual desired amount. Precision describes more the consistency of your work ethic. You can be precise but still not be accurate as a result of malfunctioning lab equipment.


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