[mso] Re: want to select dates

Ann

The use of one sum subtracted from another is a perfectly reasonable way of 
doing it.

It could also be done with a couple of SumProduct calls, but that wouldn't 
be significantly smaller.

Regards, Dave S

----- Original Message ----- 
From: "Fitzmaurice, Ann E." <a.e.fitzmaurice@xxxxxxxxxx>
To: <mso@xxxxxxxxxxxxx>
Sent: Thursday, March 27, 2008 2:45 AM
Subject: [mso] Re: want to select dates


> Dear all
>
> Sorry my post was not clear, I have now managed to solve the problem but
> will clarify the original request
>
> Col 1 =3D dates ranging from january1 to dec 31=20
> Col 2 =3D 1  next t0 date if  a person attended a meeting
> Col2  =3D 1 if a meeting took place on that date
>
> What I want to do was to calculate a percentage of meetings attended , a
> complication being that not everyone started on kan 1st , some started
> for example on march 1st , so to overcome this problem (i.e. did not
> want to count any meeting January / February in the denominator) needed
> to select a date range
>
> My solution was
> =3D(SUMIF($B5:$B32,"<=3D"&DATE(2007,12,31),Q5:Q32)-SUMIF($B5:$B32,"<"&DAT=
> E(2
> 007,3,31),Q5:Q32))/(SUMIF($B5:$B32,"<=3D"&DATE(2007,12,31),D5:D32)-SUMIF(=
> $
> B5:$B32,"<"&DATE(2007,3,31),D5:D32))*100
>
> Bit unwieldy but works,=20
>
> If anyone has a neater solution would be interested
>
> Ann
>
>
> Ann E Fitzmaurice
> Email: a.e.fitzmaurice@xxxxxxxxxx
> =20
> -----Original Message-----
> From: mso-bounce@xxxxxxxxxxxxx [mailto:mso-bounce@xxxxxxxxxxxxx] On
> Behalf Of David Smart
> Sent: 26 March 2008 14:36
> To: mso@xxxxxxxxxxxxx
> Subject: [mso] Re: want to select dates
>
> Ann
>
> Please give a more precise indication of what's where.  For instance,
> you=20
> say there's a column (singular) with dates, but then you talk about date
> 1=20
> and date 2.
>
> Give specific column and row ranges for each of the things you want to
> check=20
> and each of the things you want to sum or manipulate.
>
> However, if you are talking about a range summation with more than one
> test,=20
> then SumProduct is perhaps the best way to go.
>
> Regards, Dave S
>
> ----- Original Message -----=20
> From: "Fitzmaurice, Ann E." <a.e.fitzmaurice@xxxxxxxxxx>
> To: <mso@xxxxxxxxxxxxx>
> Sent: Wednesday, March 26, 2008 8:22 PM
> Subject: [mso] want to select dates
>
>
>> Hi using excel 2003
>>
>>
>> Have a column with dates , and two additional columns with a 1 next to
>> date if in attendance
>>
>>
>>
>> Max no of attendances are recorded in a different column
>>
>>
>>
>> What I want to do is write a formula like
>>
>>
>>
>> If (date 1 >=3D 01/12/2007 and date 2 <=3D 03/04-2008, sum (column th
>> attendances in) / max no of attendances expressed as a percentage
>>
>>
>>
>> Not sure how to do the if statement
>>
>>
>>
>> ann
>>
>>
>>
>> Ann E Fitzmaurice
>>
>> Medical Statistician
>>
>> Immpact University of Aberdeen
>>
>> Health Sciences Building
>>
>> Foresterhill
>>
>> Aberdeen, AB25 2ZD
>>
>> Scotland
>>
>> Tel: +44 (0)1224 553876
>>
>> Fax: +44 (0)1224 555704
>>
>> Email: a.e.fitzmaurice@xxxxxxxxxx <mailto:a.e.fitzmaurice@xxxxxxxxxx>
>>
>>
>>
>>
>>
>>
>>
>> The University of Aberdeen is a charity registered in Scotland, No=20
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