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Thread: Calculate Rate of Change Formula

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Calculate Rate of Change Formula
Zee 27.09.2006 23:14:02
Hi

Could someone help me w/the rate of chage formula to use when going from a
Negative to a Positive number and visa versa

In the column below - and + #s followinf each other

So what formula should I use to figure out ROC between 1 & 2, then between
2 & 3, then 3 & 4 espicially between 4 & 5, and 8 & 9, when it changes
signs

-0.0021
-0.0007
-0.0009
-0.0004
0.0001
0.0036
0.0028
0.0023
-0.0009

Would have IF and statements?

Because sometime neg follows neg, then neg follows positive, then poistive
follws negative

So what should the formula be?

RE: Calculate Rate of Change Formula
Anthony D 28.09.2006 00:30:02
Hi Zee,

If your data is in a1 to a9, in b2 try:

=(A2-A1)/ABS(A1)

copied down to b9, and b2 to b9 formatted as %.

Hope that helps,
Anthony


"Zee" wrote:

[Quoted Text]
> Hi
>
> Could someone help me w/the rate of chage formula to use when going from a
> Negative to a Positive number and visa versa
>
> In the column below - and + #s followinf each other
>
> So what formula should I use to figure out ROC between 1 & 2, then between
> 2 & 3, then 3 & 4 espicially between 4 & 5, and 8 & 9, when it changes
> signs
>
> -0.0021
> -0.0007
> -0.0009
> -0.0004
> 0.0001
> 0.0036
> 0.0028
> 0.0023
> -0.0009
>
> Would have IF and statements?
>
> Because sometime neg follows neg, then neg follows positive, then poistive
> follws negative
>
> So what should the formula be?
>
RE: Calculate Rate of Change Formula
JMB 28.09.2006 00:35:02
If the numbers are in A1:A9, are you looking for
=(A2-A1)/ABS(A1)



"Zee" wrote:

[Quoted Text]
> Hi
>
> Could someone help me w/the rate of chage formula to use when going from a
> Negative to a Positive number and visa versa
>
> In the column below - and + #s followinf each other
>
> So what formula should I use to figure out ROC between 1 & 2, then between
> 2 & 3, then 3 & 4 espicially between 4 & 5, and 8 & 9, when it changes
> signs
>
> -0.0021
> -0.0007
> -0.0009
> -0.0004
> 0.0001
> 0.0036
> 0.0028
> 0.0023
> -0.0009
>
> Would have IF and statements?
>
> Because sometime neg follows neg, then neg follows positive, then poistive
> follws negative
>
> So what should the formula be?
>
RE: Calculate Rate of Change Formula
Zee 28.09.2006 01:14:02
Thanks Anthony & JMB
Below are results,but a Q on them

Result
-0.0021 38
-0.0007 67
-0.0009 -29
-0.0004 56
0.0001 125
0.0036 3500
0.0028 -22
0.0023 -18
-0.0009 -139

Why am I getting +67 between two neg #s, and -29 again between 2 neg #s?
Please help
Thanks
Zee



"JMB" wrote:

[Quoted Text]
> If the numbers are in A1:A9, are you looking for
> =(A2-A1)/ABS(A1)
>
>
>
> "Zee" wrote:
>
> > Hi
> >
> > Could someone help me w/the rate of chage formula to use when going from a
> > Negative to a Positive number and visa versa
> >
> > In the column below - and + #s followinf each other
> >
> > So what formula should I use to figure out ROC between 1 & 2, then between
> > 2 & 3, then 3 & 4 espicially between 4 & 5, and 8 & 9, when it changes
> > signs
> >
> > -0.0021
> > -0.0007
> > -0.0009
> > -0.0004
> > 0.0001
> > 0.0036
> > 0.0028
> > 0.0023
> > -0.0009
> >
> > Would have IF and statements?
> >
> > Because sometime neg follows neg, then neg follows positive, then poistive
> > follws negative
> >
> > So what should the formula be?
> >
Re: Calculate Rate of Change Formula
SteveW <sj_walton[ at ]nothotmail.com> 28.09.2006 01:28:31
On Thu, 28 Sep 2006 02:14:02 +0100, Zee <Zee[ at ]discussions.microsoft.com> =
=

wrote:

[Quoted Text]
> Thanks Anthony & JMB
> Below are results,but a Q on them
>
> Result
> -0.0021 38
> -0.0007 67
> -0.0009 -29
> -0.0004 56
> 0.0001 125
> 0.0036 3500
> 0.0028 -22
> 0.0023 -18
> -0.0009 -139
>
> Why am I getting +67 between two neg #s, and -29 again between 2 ne=
g =

> #s?

because it went from -.0021 to -0.0007 ie increase of 67%
in the other one it drops from -.0007 to -0.0009 ie a drop of 29%

Don't blame the formula if the answers aren't what you expected :)
Seriously, though always good to query the results - it might be a data =
=

error
or one in the formula - always best to check.

You haven't explained what the data is, but as long as the values are =

equally spaced in time or whatever
then the results shuold be valid.




> Please help
> Thanks
> Zee
> =

>
>
> "JMB" wrote:
>
>> If the numbers are in A1:A9, are you looking for
>> =3D(A2-A1)/ABS(A1)
>>
>>
>>
>> "Zee" wrote:
>>
>> > Hi
>> >
>> > Could someone help me w/the rate of chage formula to use when goin=
g =

>> from a
>> > Negative to a Positive number and visa versa
>> >
>> > In the column below - and + #s followinf each other
>> >
>> > So what formula should I use to figure out ROC between 1 & 2, then=
=

>> between
>> > 2 & 3, then 3 & 4 espicially between 4 & 5, and 8 & 9, when it =

>> changes
>> > signs
>> >
>> > -0.0021
>> > -0.0007
>> > -0.0009
>> > -0.0004
>> > 0.0001
>> > 0.0036
>> > 0.0028
>> > 0.0023
>> > -0.0009
>> >
>> > Would have IF and statements?
>> >
>> > Because sometime neg follows neg, then neg follows positive, then =
=

>> poistive
>> > follws negative
>> >
>> > So what should the formula be?
>> >



-- =

Steve (3)
RE: Calculate Rate of Change Formula
JMB 28.09.2006 01:30:01
+67: Because -0.0007 is larger than -0.0021
-29: Because -0.0009 is smaller than -0.0007

Positive rate of change means the numbers are getting larger, negative means
the numbers are getting smaller.

"Zee" wrote:

[Quoted Text]
> Thanks Anthony & JMB
> Below are results,but a Q on them
>
> Result
> -0.0021 38
> -0.0007 67
> -0.0009 -29
> -0.0004 56
> 0.0001 125
> 0.0036 3500
> 0.0028 -22
> 0.0023 -18
> -0.0009 -139
>
> Why am I getting +67 between two neg #s, and -29 again between 2 neg #s?
> Please help
> Thanks
> Zee
>
>
>
> "JMB" wrote:
>
> > If the numbers are in A1:A9, are you looking for
> > =(A2-A1)/ABS(A1)
> >
> >
> >
> > "Zee" wrote:
> >
> > > Hi
> > >
> > > Could someone help me w/the rate of chage formula to use when going from a
> > > Negative to a Positive number and visa versa
> > >
> > > In the column below - and + #s followinf each other
> > >
> > > So what formula should I use to figure out ROC between 1 & 2, then between
> > > 2 & 3, then 3 & 4 espicially between 4 & 5, and 8 & 9, when it changes
> > > signs
> > >
> > > -0.0021
> > > -0.0007
> > > -0.0009
> > > -0.0004
> > > 0.0001
> > > 0.0036
> > > 0.0028
> > > 0.0023
> > > -0.0009
> > >
> > > Would have IF and statements?
> > >
> > > Because sometime neg follows neg, then neg follows positive, then poistive
> > > follws negative
> > >
> > > So what should the formula be?
> > >
RE: Calculate Rate of Change Formula
Rookie 1st class 29.09.2006 17:03:02
If the correct answer for the first 2 numbers is 14, Copy this formula into
the cell to the right of -0.0007 and then fill down. If -0.0021 is not in
(A1) you will need to adjust the formula. ABS doesn't care whether negative
or positive numbers.
=ABS(A1-A2)

"Zee" wrote:

[Quoted Text]
> Hi
>
> Could someone help me w/the rate of chage formula to use when going from a
> Negative to a Positive number and visa versa
>
> In the column below - and + #s followinf each other
>
> So what formula should I use to figure out ROC between 1 & 2, then between
> 2 & 3, then 3 & 4 espicially between 4 & 5, and 8 & 9, when it changes
> signs
>
> -0.0021
> -0.0007
> -0.0009
> -0.0004
> 0.0001
> 0.0036
> 0.0028
> 0.0023
> -0.0009
>
> Would have IF and statements?
>
> Because sometime neg follows neg, then neg follows positive, then poistive
> follws negative
>
> So what should the formula be?
>

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