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#1
June 12th 08, 10:08 PM posted to microsoft.public.excel.worksheet.functions
 external usenet poster First recorded activity by ExcelBanter: Jun 2008 Posts: 5
Counting items in one column based on criteria in another column

I am looking to calculate the total number of students enrolled in each class
on each day the class is offered:

Column A lists the student's name
Column B lists the class the student is taking
Column C lists the date the class will be taken

So, I want to find out how many students are taking class X on Monday, then
how many are taking it on Tuesday, etc., for each class Y and Z and so on.

As a formula I was thinking along the lines of:

Count the number of times X appears in Column B if the date in Column C is
Monday

I've tried using IF and COUNTIF, but can't seem to get the syntax to work,
so I'm thinking I'm going about it all wrong.

Any suggestions? It would be most appreciated! Thank you!

#2
June 12th 08, 10:25 PM posted to microsoft.public.excel.worksheet.functions
 external usenet poster First recorded activity by ExcelBanter: Sep 2006 Posts: 1,311
Counting items in one column based on criteria in another column

One way:

=SUMPRODUCT(--(B2:B100="X"),--(WEEKDAY(C2:C100)=2))

HTH,
Paul

--

"luttona" wrote in message
...
I am looking to calculate the total number of students enrolled in each
class
on each day the class is offered:

Column A lists the student's name
Column B lists the class the student is taking
Column C lists the date the class will be taken

So, I want to find out how many students are taking class X on Monday,
then
how many are taking it on Tuesday, etc., for each class Y and Z and so on.

As a formula I was thinking along the lines of:

Count the number of times X appears in Column B if the date in Column C is
Monday

I've tried using IF and COUNTIF, but can't seem to get the syntax to work,
so I'm thinking I'm going about it all wrong.

Any suggestions? It would be most appreciated! Thank you!

#3
June 12th 08, 10:29 PM posted to microsoft.public.excel.worksheet.functions
 external usenet poster First recorded activity by ExcelBanter: Jul 2006 Posts: 4,393
Counting items in one column based on criteria in another column

In pre-2007 versions:
COUNTIF allows only one criterion
=SUMPRODUCT(--(B1:B100="X"),--(C1:C100="Monday"))
The double negation -- converts Boolean FALSE/TRUE into numbers 0/1

SUMPROIDUCT (pre XL2007) does not work with full columns so do not use B:B
and C:C but use an actual range
For more details, Google with "SUMPRODUCT Excel"

In XL2007 - read Help on COUNTIFS which allows many criteria
best wishes
--
Bernard Liengme
Microsoft Excel MVP
http://people.stfx.ca/bliengme

"luttona" wrote in message
...
I am looking to calculate the total number of students enrolled in each
class
on each day the class is offered:

Column A lists the student's name
Column B lists the class the student is taking
Column C lists the date the class will be taken

So, I want to find out how many students are taking class X on Monday,
then
how many are taking it on Tuesday, etc., for each class Y and Z and so on.

As a formula I was thinking along the lines of:

Count the number of times X appears in Column B if the date in Column C is
Monday

I've tried using IF and COUNTIF, but can't seem to get the syntax to work,
so I'm thinking I'm going about it all wrong.

Any suggestions? It would be most appreciated! Thank you!

#4
June 13th 08, 06:00 PM posted to microsoft.public.excel.worksheet.functions
 external usenet poster First recorded activity by ExcelBanter: Jun 2008 Posts: 5
Counting items in one column based on criteria in another colu

Thank you! This solved the problem brilliantly!

"Bernard Liengme" wrote:

In pre-2007 versions:
COUNTIF allows only one criterion
=SUMPRODUCT(--(B1:B100="X"),--(C1:C100="Monday"))
The double negation -- converts Boolean FALSE/TRUE into numbers 0/1

SUMPROIDUCT (pre XL2007) does not work with full columns so do not use B:B
and C:C but use an actual range
For more details, Google with "SUMPRODUCT Excel"

In XL2007 - read Help on COUNTIFS which allows many criteria
best wishes
--
Bernard Liengme
Microsoft Excel MVP
http://people.stfx.ca/bliengme

"luttona" wrote in message
...
I am looking to calculate the total number of students enrolled in each
class
on each day the class is offered:

Column A lists the student's name
Column B lists the class the student is taking
Column C lists the date the class will be taken

So, I want to find out how many students are taking class X on Monday,
then
how many are taking it on Tuesday, etc., for each class Y and Z and so on.

As a formula I was thinking along the lines of:

Count the number of times X appears in Column B if the date in Column C is
Monday

I've tried using IF and COUNTIF, but can't seem to get the syntax to work,
so I'm thinking I'm going about it all wrong.

Any suggestions? It would be most appreciated! Thank you!

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