Uncertainty value in equation


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Andrea_1H
Posts: 50
Joined: Wed Sep 18, 2019 12:18 am

Uncertainty value in equation

Postby Andrea_1H » Sun Oct 20, 2019 9:35 pm

For the uncertainty value, you add up the total uncertainty right? So for example, if you have 105 m +/- 3 m, the uncertainty value is 6 m? Or is it 3?

ShastaB4C
Posts: 100
Joined: Thu Sep 26, 2019 12:18 am

Re: Uncertainty value in equation

Postby ShastaB4C » Sun Oct 20, 2019 9:39 pm

I would say just +/- 3 so 3 as an absolute value

kpang_4H
Posts: 55
Joined: Fri Sep 20, 2019 12:17 am

Re: Uncertainty value in equation

Postby kpang_4H » Sun Oct 20, 2019 9:41 pm

You would add it up, so the uncertainty value would be 6.

904914037
Posts: 65
Joined: Wed Sep 18, 2019 12:16 am

Re: Uncertainty value in equation

Postby 904914037 » Tue Oct 22, 2019 9:07 pm

In discussion section last week, my TA said to add them up so yes it would be 6!

Jasmine 2C
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Joined: Wed Sep 18, 2019 12:18 am

Re: Uncertainty value in equation

Postby Jasmine 2C » Thu Oct 24, 2019 2:40 am

Yes because the "range of uncertainty" if you would call it that, or margin of uncertainty, is +/- 3 so it's basically the absolute value of 3 times 2.

Caroline Zepecki
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Joined: Fri Aug 09, 2019 12:16 am

Re: Uncertainty value in equation

Postby Caroline Zepecki » Thu Oct 24, 2019 9:25 am

Do uncertainty values always have to be whole integers? also when giving the "total uncertainty" do you always know to just add the numbers or will it ever specify for the range?

Veronica_Lubera_2A
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Re: Uncertainty value in equation

Postby Veronica_Lubera_2A » Thu Oct 24, 2019 9:54 am

I also asked my TA and she said it would be 6. There was some confusion because the answer key was wrong for one of the homework questions but it should be double the +- value.

Justin Sarquiz 2F
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Joined: Fri Aug 30, 2019 12:15 am

Re: Uncertainty value in equation

Postby Justin Sarquiz 2F » Thu Oct 24, 2019 10:03 am

Uncertainty values do not always have to be integers. We could have 5 +- 1.3. The uncertainty value would be 1.3(2)= 2.6.

emma brinton_3B
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Re: Uncertainty value in equation

Postby emma brinton_3B » Thu Oct 24, 2019 10:33 am

yes you add the total uncertainty since it makes it account for both the positive or negative

Nathan Nakaguchi 1G
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Re: Uncertainty value in equation

Postby Nathan Nakaguchi 1G » Thu Oct 24, 2019 11:03 am

Uncertainty accounts for both the positive and negative, so if your v was 103 +or- 3 then the uncertainty would be 3(2)= 6.


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