sig fig

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Agustina Santa Cruz 2F
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Joined: Wed Sep 30, 2020 10:01 pm

sig fig

Postby Agustina Santa Cruz 2F » Sun Oct 18, 2020 7:42 pm

Do you guys recommend changing to the correct numbers of sig figs in the middle of an equation or when you have the final result? Also, will we get marked down if sig fig numbers of final result don't match the amount given?

Logan Wiedemann 3J
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Joined: Wed Sep 30, 2020 9:59 pm

Re: sig fig

Postby Logan Wiedemann 3J » Sun Oct 18, 2020 7:47 pm

I would recommend waiting until the end of the problem to change to the correct amount of sig figs because you may have an incorrect decimal or a decimal that is off a few places if you change halfway through the problem. As for the grading, I would say that it is more than likely that it would be marked if the amount of sig figs is incorrect, but I'm not 100% sure.

905409193
Posts: 94
Joined: Wed Sep 30, 2020 10:06 pm

Re: sig fig

Postby 905409193 » Sun Oct 18, 2020 7:50 pm

I think it would be best to carry all decimals throughout the calculation and then the result should be rounded at the end. You'll get the most accurate sig fig that way. I have no idea about the second part

Algernon Jackson 2l
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Joined: Mon Jan 06, 2020 7:27 am

Re: sig fig

Postby Algernon Jackson 2l » Sun Oct 18, 2020 8:00 pm

I recommend rounding to the appropriate significant figure after you get your final answer.

Katelyn_Ortega_1D
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Joined: Wed Sep 30, 2020 10:00 pm

Re: sig fig

Postby Katelyn_Ortega_1D » Sun Oct 18, 2020 8:00 pm

I would highly recommend changing the sig figs at the end so you get the most accurate answer. For your second question, I think you will be marked down for that but I am not entirely sure, my suggestion would be to use the same amount of sig figs as the amount given.

Nathaly Cruz 2D
Posts: 55
Joined: Wed Sep 30, 2020 10:06 pm

Re: sig fig

Postby Nathaly Cruz 2D » Sun Oct 18, 2020 8:08 pm

I would wait until the end to round your numbers. I would also stick to the number of sig figs that were given in the problem, just to be safe.

Lauren Sarigumba 1K
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Joined: Wed Sep 30, 2020 9:41 pm

Re: sig fig

Postby Lauren Sarigumba 1K » Sun Oct 18, 2020 8:21 pm

I agree with all of the other responses. I definitely recommend waiting until your final answer to round based on significant figures just to make your answer more accurate. Just keep in mind that if you do end up rounding throughout your calculations that there are different rules for rounding when multiplying/dividing versus adding/subtracting values. For multiplication/division, the least number of sig figs in any number of the problem determines the number of sig figs in the answer to that problem. For addition/substraction, the final answer may have no more sig figs to the right of the decimal that the least number of sig figs to the right of the decimal of any number in the problem.

Sean Phen
Posts: 107
Joined: Wed Sep 30, 2020 10:01 pm

Re: sig fig

Postby Sean Phen » Sun Oct 18, 2020 8:27 pm

Hi, I do not recommend changing to the correct number of sig figs in the middle of an equation because it will mess up the final result. I usually change it when I have the final result. I am not exactly sure how the professor wants it, but you can ask the TA or the professor directly for more information.

Jonathan3B
Posts: 86
Joined: Wed Sep 30, 2020 9:43 pm

Re: sig fig

Postby Jonathan3B » Sun Oct 18, 2020 8:28 pm

I would recommend you wait until the final answer as doing this in the middle of a problem can lead to confusion and may cause your answer to be slightly off.

Mina Tadros 3L
Posts: 93
Joined: Wed Sep 30, 2020 9:38 pm

Re: sig fig

Postby Mina Tadros 3L » Sun Oct 18, 2020 8:29 pm

I usually change my sig figs at the very end to ensure that my calculations are as close to the real value as possible. If you keep rounding midway, your answer begins to deviate from the final actual value.

IshanModiDis2L
Posts: 95
Joined: Wed Sep 30, 2020 9:49 pm

Re: sig fig

Postby IshanModiDis2L » Sun Oct 18, 2020 8:36 pm

I think rounding to the proper significant figures once you have gotten to the final answer is your best bet.

Muskaan Abdul-Sattar
Posts: 89
Joined: Wed Nov 13, 2019 12:19 am

Re: sig fig

Postby Muskaan Abdul-Sattar » Sun Oct 18, 2020 9:05 pm

I usually don't convert to significant figures until the very end, but I'm not completely sure!

Karen Elrayes 1L
Posts: 91
Joined: Wed Sep 30, 2020 9:45 pm

Re: sig fig

Postby Karen Elrayes 1L » Mon Oct 26, 2020 12:53 am

Do you guys think we need sig figs since it's a multiple choice exam for this midterm

Truman Chong Dis 3G
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Re: sig fig

Postby Truman Chong Dis 3G » Mon Oct 26, 2020 1:01 am

I recommend keeping all values in your calculator until the final solution and round using the number of sig figs in the question.

Cassidy Cheng 1J
Posts: 56
Joined: Wed Sep 30, 2020 9:33 pm

Re: sig fig

Postby Cassidy Cheng 1J » Mon Oct 26, 2020 8:55 am

Karen Elrayes 1L wrote:Do you guys think we need sig figs since it's a multiple choice exam for this midterm


I would just do it just because there may be choices that are similar to each other.

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

Re: sig fig

Postby Dane_Beasley_1E » Sun Dec 06, 2020 11:31 pm

I would recommend changing the sig figs at the end of the problem. This way you could not mess up the accuracy of your solution.

Mauricio Maravilla 3C
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Joined: Wed Sep 30, 2020 9:33 pm

Re: sig fig

Postby Mauricio Maravilla 3C » Tue Dec 08, 2020 8:37 am

Will sig figs be important on the final?

Eunice_Castro_1G
Posts: 91
Joined: Wed Sep 30, 2020 9:46 pm

Re: sig fig

Postby Eunice_Castro_1G » Tue Dec 08, 2020 11:07 am

Mauricio Maravilla 3C wrote:Will sig figs be important on the final?

Hi! They will be included in the final since it is cumulative and they take an important part on some of the calculations. I am not sure how prominent they will be on the final, but I would recommend going over it. Hope this helps!

Ryan_Page_1J
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Re: sig fig

Postby Ryan_Page_1J » Tue Dec 08, 2020 1:41 pm

Eunice_Castro_1G wrote:
Mauricio Maravilla 3C wrote:Will sig figs be important on the final?

Hi! They will be included in the final since it is cumulative and they take an important part on some of the calculations. I am not sure how prominent they will be on the final, but I would recommend going over it. Hope this helps!


My TA mentioned that they will be included, but not in a way that they are trying to trick you into picking an answer with the wrong SIG FIGS...just as a general concept included in questions&answers.

Brian Acevedo 3H
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Joined: Wed Sep 30, 2020 9:44 pm

Re: sig fig

Postby Brian Acevedo 3H » Tue Dec 08, 2020 7:34 pm

Mauricio Maravilla 3C wrote:Will sig figs be important on the final?


This is entirely speculative, but I have a feeling that sig figs will be important in any calculation problem where we are given some of the values used during calculation. I would imagine there's a little more leeway with respect to values coming from the periodic table, but I'd still try to keep sig figs in mind wherever possible.

Anvy 1G
Posts: 40
Joined: Tue Feb 25, 2020 12:16 am

Re: sig fig

Postby Anvy 1G » Sat Jan 16, 2021 10:41 pm

Sig figs, when I was in high school, was considered the thing you shouldn't really worry about until the AP physics classes when a question had the answer to the thousandths and I put it to the hundredths and got it wrong. subsequently so were the rest because I had no idea that sig figs count not the best way to start off the entire semester but at least I learned.


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