round 2.0469 to two significant figures - Corsa Sport - for Vauxhall and Opel Corsa B, Corsa C and Corsa D

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gianluigi

Member

Registered: 9th Mar 05
Location: Ipswich, Suffolk
User status: Offline

17th Nov 05 at 14:51

have you got a GSCE B in maths? have u got an A/S in statistics? let me guess.....

Lawrah

Premium Member

Registered: 25th Dec 04
User status: Offline

17th Nov 05 at 14:53

what is A/S ? gsce? not a gcse?

Higher and Advanced?

Tarrantino

Member

Registered: 29th Sep 04
Location: Essex
User status: Offline

17th Nov 05 at 14:53

quote:
Originally posted by gianluigi
the way i did it was the 9 will round the 6 up to 7, the 7 will round the 4 upto 5 and the 5 will round the 0 upto 1,

i was taught that you round 5 up

this man speaks the truth

Carl

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Registered: 9th May 04
Location: Jimmy Bennett's la la land.
User status: Offline

17th Nov 05 at 14:53

bahhh head blag

dna23

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Registered: 1st Nov 04
Location: Northamptonshire
User status: Offline

17th Nov 05 at 14:56

http://www.uop.edu/cop/psychology/Statistics/Rounding.html

Lawrah

Premium Member

Registered: 25th Dec 04
User status: Offline

17th Nov 05 at 14:59

Yes..that is what i posted.

gianluigi

Member

Registered: 9th Mar 05
Location: Ipswich, Suffolk
User status: Offline

17th Nov 05 at 15:03

quote:
Originally posted by Tarrantino

quote:
Originally posted by gianluigi
the way i did it was the 9 will round the 6 up to 7, the 7 will round the 4 upto 5 and the 5 will round the 0 upto 1,

i was taught that you round 5 up

this man speaks the truth

myke

Member

Registered: 7th Feb 01
Location: High Wycombe, Buckinghamshire
User status: Offline

17th Nov 05 at 15:15

see i thought you kept going to the right if you had 4's untill you came to a 3 or a 5 which would dictate wether to round up or down.
i had as2.1 but been told it's actually 2.0

i now understand this is wrong, but i've always been tought to do it that way.

Tim

Site Administrator

Registered: 21st Apr 00
User status: Offline

17th Nov 05 at 15:19

It's 2.0. You don't round all the numbers and so eventually get to 2.05 and then round that to 2.1.

You just cut it at 2.0, look at the next digit (4) and so you can leave the previous digit alone.

And for those that don't like rules, just use common sense -- 469 is closer to 0 than it is to 1000...

Oh and 2 significant figures means 2 figures -- if they meant after the decimal place they'd say 'decimal places'. Two s.f. could also be used for something like:

16'456'789 to 2 s.f. is 16'000'000

[Edited on 17-11-2005 by Tim]

[Edited on 17-11-2005 by Tim]

drax

Member

Registered: 5th Feb 05
Location: Sittingbourne, Kent
User status: Offline

17th Nov 05 at 15:20

2.05 or 2.1 ...

[Edited on 17-11-2005 by drax]

Ian

Site Administrator

Registered: 28th Aug 99
Location: Liverpool
User status: Online

17th Nov 05 at 15:31

Two things.

2 significant figures is different end result to 2 decimal places.

quote:

the 9 will round the 6 up to 7, the 7 will round the 4 upto 5 and the 5 will round the 0 upto 1

Rounding cannot be applied more than once!

gianluigi

Member

Registered: 9th Mar 05
Location: Ipswich, Suffolk
User status: Offline

17th Nov 05 at 15:35

quote:
Originally posted by Ian
Two things.

2 significant figures is different end result to 2 decimal places.

quote:

the 9 will round the 6 up to 7, the 7 will round the 4 upto 5 and the 5 will round the 0 upto 1

Rounding cannot be applied more than once!

yes it can, if you need to bring it down to 2 significant figures. 2 significant figures means 2 significant digits. because the fact it ends up as 2.05, you can round the 5 up to make it 2.1 if it was 2.0369, it would be 2.04 (2 s.f)

i can sware this was the way i was taught

Ian

Site Administrator

Registered: 28th Aug 99
Location: Liverpool
User status: Online

17th Nov 05 at 15:38

Go in from the left.

Need the 2 - yes.

Need the 0 - yes.

0 need rounding before we take it - no.

Stop.

Lawrah

Premium Member

Registered: 25th Dec 04
User status: Offline

17th Nov 05 at 15:38

Yes, you are correct with the 5 rounds up, but you dont round all the digits ..

gianluigi

Member

Registered: 9th Mar 05
Location: Ipswich, Suffolk
User status: Offline

17th Nov 05 at 15:40

Ian, you go in from the right.

Ally

Member

Registered: 2nd Jul 03
Location: Pontypool Drives: a Skoda
User status: Offline

17th Nov 05 at 15:41

quote:
Originally posted by Ian
Go in from the left.

Need the 2 - yes.

Need the 0 - yes.

0 need rounding before we take it - no.

Stop.

I understand now

chumbly_warner

Premium Member

Registered: 22nd Aug 03
Location: Leicestershire
User status: Offline

17th Nov 05 at 15:46

2 SF would be 2.0
2 DP would be 2.05

gianluigi

Member

Registered: 9th Mar 05
Location: Ipswich, Suffolk
User status: Offline

17th Nov 05 at 15:47

quote:
Originally posted by chumbly_warner
2 SF would be 2.0
2 DP would be 2.05

2.0 is not 2 significant figures. because it can be expressed as just 2, which is 1 significant figure.

Ren

Member

Registered: 16th Oct 04
User status: Offline

17th Nov 05 at 15:57

oh jeez, i forgot how much i loved maths

Ian

Site Administrator

Registered: 28th Aug 99
Location: Liverpool
User status: Online

17th Nov 05 at 16:53

No 2.0 is a number to 2 SF in the range 1.95-2.04

2 to 1 SF is a number in the range 1.5 - 2.4

2.0 and 2 are not numerically equivalent.

gianluigi

Member

Registered: 9th Mar 05
Location: Ipswich, Suffolk
User status: Offline

17th Nov 05 at 16:57

quote:
Originally posted by Ian
No 2.0 is a number to 2 SF in the range 1.95-2.04

2 to 1 SF is a number in the range 1.5 - 2.4

2.0 and 2 are not numerically equivalent.

you are seriously not saying 2.0 and 2 are not the same expression?

Ian, i thought you were the voice of reason

Rebrabuk

Member

Registered: 28th Mar 04
Location: North East
User status: Offline

17th Nov 05 at 17:20

Some thick cunts on here...

Haimsey

Premium Member

Registered: 8th May 05
Location: Nottingham Drives: Corsa B
User status: Offline

17th Nov 05 at 17:38

quote:
Originally posted by Lawrah
http://science.widener.edu/svb/tutorial/sigfigures.html

not bad i dont think, got bored by this point

[Edited on 17-11-2005 by Haimsey]

Marcy Marc

White Sport Progress Thread

RobHayes

Member

Registered: 6th Sep 03
Location: Lincolnshire
User status: Offline

17th Nov 05 at 17:56

2 and 2.0 are not the same expression
the .0 after the 2 indicates that the number is not exactly 2 as in 2.000000000000000000000000000000000000000, it has been rounded off, so it can be anything between 1.95 -> 2.04 (2s.f)

[Edited on 17-11-2005 by RobHayes]

whitter45

Member

Registered: 15th Nov 02
Location: Norton
User status: Offline

17th Nov 05 at 18:15

2.05 you clot

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