Sig Fig Question

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Emily_Stenzler_2H
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Sig Fig Question

Postby Emily_Stenzler_2H » Sat Oct 24, 2020 9:10 pm

In the textbook, I noticed numbers are sometimes written with a decimal at the end and no following digits, such as 350. pm. Is this to indicate that we should be using 3 sig figs instead of two (in this case)? Does that decimal make 350 3 sig figs instead of 2?

Jessie Hsu 1C
Posts: 90
Joined: Wed Sep 30, 2020 9:49 pm

Re: Sig Fig Question

Postby Jessie Hsu 1C » Sat Oct 24, 2020 9:12 pm

Yes you're absolutely right! 350. will be 3 sigfigs and 350 without the decimal is 2 sigfigs.

Micaela Estavillo
Posts: 55
Joined: Wed Sep 30, 2020 9:44 pm

Re: Sig Fig Question

Postby Micaela Estavillo » Sat Oct 24, 2020 9:13 pm

Correct, if its just 320 then there are only 2 sig figs in this case. If it was 320.0 it would be 3 sig figs.

Ashley Wagner 2A
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Joined: Wed Sep 30, 2020 9:32 pm

Re: Sig Fig Question

Postby Ashley Wagner 2A » Sat Oct 24, 2020 9:14 pm

Yes, it does have 3 sig figs since the decimal is after the 0 in 350.

Brennan McGurrr 3C
Posts: 85
Joined: Wed Sep 30, 2020 9:47 pm

Re: Sig Fig Question

Postby Brennan McGurrr 3C » Sat Oct 24, 2020 9:16 pm

If you don't like that notation, another way to write 350 using 2 sig figs is using scientific notation. It would be 3.5x10^2.

Colin Squire 3B
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Joined: Wed Sep 30, 2020 9:35 pm

Re: Sig Fig Question

Postby Colin Squire 3B » Sat Oct 24, 2020 9:35 pm

Yes, the decimal does add to the significant figures!

Jacob Schwarz-Discussion 3I
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Joined: Wed Sep 30, 2020 10:01 pm

Re: Sig Fig Question

Postby Jacob Schwarz-Discussion 3I » Sun Nov 15, 2020 11:51 pm

For anyone on this thread,
we don't need to worry about Sig Figs for the midterm!!

IshanModiDis2L
Posts: 84
Joined: Wed Sep 30, 2020 9:49 pm

Re: Sig Fig Question

Postby IshanModiDis2L » Mon Nov 16, 2020 12:10 am

It has 3 sig figs since the decimal is after the 0 in 350 and if there were not a decimal then 350 would only have two sig figs.

TiffanyBrownfield 2I
Posts: 78
Joined: Wed Sep 30, 2020 9:42 pm

Re: Sig Fig Question

Postby TiffanyBrownfield 2I » Sun Nov 22, 2020 11:48 pm

Yes, the decimal was used to indicate that the measurement was precise up to that point, and that the 0 should be considered a significant figure.

Dane_Beasley_1E
Posts: 68
Joined: Wed Sep 30, 2020 9:42 pm

Re: Sig Fig Question

Postby Dane_Beasley_1E » Sun Nov 29, 2020 11:58 pm

Yes you are correct. The reason there is a decimal after the 350. is to indicate 3 Sigfigs and not 2.

alexandralopez 3F
Posts: 83
Joined: Wed Sep 30, 2020 10:11 pm

Re: Sig Fig Question

Postby alexandralopez 3F » Mon Nov 30, 2020 12:00 am

Yes, youre thinking is correct! it is 3 sig figs

Sam Wentzel 1F 14B
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Re: Sig Fig Question

Postby Sam Wentzel 1F 14B » Mon Nov 30, 2020 1:10 am

Yes. Sig Figs count all numbers proceeding and preceding the decimal point, unless the only number before the decimal point is a 0, and 0's preceding a non-zero after a decimal point a not counted, only numbers following and including the non zero are counted. Ex: 0.00305 there are 3 sig figs, being 3, 0, and 5.

105618850
Posts: 59
Joined: Wed Sep 30, 2020 9:38 pm

Re: Sig Fig Question

Postby 105618850 » Fri Dec 04, 2020 12:33 am

Yes, the answer would have three significant figures.


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