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# maths watch

1. what do i do to get an appropriate degree of accuracy from an answer of that has been estimated such in my case i had to work out the estimated mean of time people spent in the pool so my answer is 16.875 i know need to give it in a appropriate degree of accuracy
2. (Original post by nandola23)
what do i do to get an appropriate degree of accuracy from an answer of that has been estimated such in my case i had to work out the estimated mean of time people spent in the pool so my answer is 16.875 i know need to give it in a appropriate degree of accuracy
START
2)Look for a number with the least number of significant figures
3)Round to THAT number of significant figures
END

Otherwise, round to 2 or 3 significant figures. IMO they're the most common number of significant figures.
3. (Original post by nandola23)
what do i do to get an appropriate degree of accuracy from an answer of that has been estimated such in my case i had to work out the estimated mean of time people spent in the pool so my answer is 16.875 i know need to give it in a appropriate degree of accuracy
I assume it is 16 minutes and 0.875 of a minute. Don't bother reading the rest of this post if they don't want it in minutes and seconds :/

If it's time, you have to do it in seconds. Firstly, you do 0.875*100 which is 87.5 Then you do 87.5%*60 which is 52.5 (this is in seconds). This means the answer is 16.525 but seconds are only 2 digits so you round. 0.525 rounds to 0.53. So your final answer is 16 minutes 52 seconds.
4. 4.1_HW_on_Estimate_of_mean (1).pdfIt is question D3

(Original post by Kushala Daora)
START
2)Look for a number with the least number of significant figures
3)Round to THAT number of significant figures
END
5. 4.1_HW_on_Estimate_of_mean (1).pdfIt is question D3 if doesnt open up please tell me

I assume it is 16 minutes and 0.875 of a minute. Don't bother reading the rest of this post if they don't want it in minutes and seconds :/

If it's time, you have to do it in seconds. Firstly, you do 0.875*100 which is 87.5 Then you do 87.5%*60 which is 52.5 (this is in seconds). This means the answer is 16.525 but seconds are only 2 digits so you round. 0.525 rounds to 0.53. So your final answer is 16 minutes 52 seconds.
6. (Original post by nandola23)
4.1_HW_on_Estimate_of_mean (1).pdfIt is question D3
I don't understand because I can't see the link.

Also, I don't see why you would send me the link if I just told you how to answer the question....
7. (Original post by nandola23)
4.1_HW_on_Estimate_of_mean (1).pdfIt is question D3 if doesnt open up please tell me
Ok well then cool, because it wants it in minutes so then my answer (hopefully should be) is right

8. sorry about that i just understand what you are trying to say

(Original post by Kushala Daora)
I don't understand because I can't see the link.

Also, I don't see why you would send me the link if I just told you how to answer the question....
9. did you see the question

Ok well then cool, because it wants it in minutes so then my answer (hopefully should be) is right
10. (Original post by nandola23)

sorry about that i just understand what you are trying to say
Round to 1 significant figure because it is the smallest number of significant figures given in the question.
11. so i round my answer 16.875 because thats my answer of the estimated mean

(Original post by Kushala Daora)
Round to 1 significant figure because it is the smallest number of significant figures given in the question.
12. (Original post by nandola23)
so i round my answer 16.875 because thats my answer of the estimated mean
13. 20 minutes or seconds or hours

#

(Original post by Kushala Daora)

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