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- Nested IF and LOOKUP - can anyone spot the problem with these formulas?
- Linking Question (long, sorry!)
- Help on excel
- Vlookup formula not working currectly
- Entering array in single cell
- IF and seven nested functions
- Help on excel project
- Make a Cell Output a Letter

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I am working on a gradebook. The final grade consists of a homework average, a project average, and three exam grades.

The homework average is calculated in column AV and the project average is calculated in column BF. The raw exam scores are entered in columns BR, BS and BT.

For the homework and project averages, it is important to differentiate between the case where no assignments have been graded, and the case where assignments have earned a grade of zero. When I calculate the homework average, I use the following array formula:

=IF(COUNT(AF10:AU10)=0,"",100*SUM(AF10:AU10/$AF$3:$AU$3)/COUNT(AF10:AU10))

If the count = 0, then no homework grades have been entered and I want nothing to display in the average column (AV). If count is greater than zero, the average is calculated and converted to a number between 0 and 100. The project average uses a similar formula.

I have a summary section in columns BY to CC, where BY is the homework average, BZ is the project average, and CA - CC are the exam scores

In the homework summary column, I would like the cell blank if no homework has been turned in, and use the formula: =IF(ISNUMBER(AV10), AV10, "")

I use similar formulas for the project average summary column and the grade summary columns. The above works fine for displaying the category averages.

My problem occurs when I try to calculate the weighted average for each student. The category weights are in row 3. Im trying to use the formula: =SUMPRODUCT( (BY10:CC10) * (BY3:CC3) )

This formula gives me a VALUE error. Using the Evaluate Formula tool (Excel 2003) I discovered that when the cells are blank (due to the entry in the IF formulas) Excel wants to treat those cells as text even though I have them formatted as numbers. I've tried a variety of array formulas using the ISNUMBER function, but can't get rid of the VALUE errors.

I would be very grateful for any advice the group can offer. Thank you in advance for any assistance.

--

I am trying to convert numbers on a 22 point scale (a test score) into a letter grade (A to H). For instance, If someone scored 20, this is an A3 grade; if they scored 16 they get a B2.

I have tried the following formulas, based on threads I searched, but I get the 'there's an error in your formula' message. I'm probably just being stupid but I can't see what I'm doing wrong.

=IF(I24=22,A1,IF(I24=21,A2,IF(I24=20,A3,IF(I24=19,A4,IF(I24=18,A5,IF(I24=17,B1,IF(I24=16 ,B2,IF(I24=15,B3,IF(I24=14,C1,IF(I24=13,C2, IF(I24=12,C3,IF(I24=11,D1,IF(I24=10,D2,IF(I24=9,D3,IF(I24=8,E1, IF(I24=7,E2,IF(I24=6,E3,IF(I24=5,F1,IF(I24=4,F2,IF(I24=3,F3, IF(I24=2,G1,IF(I24=1,G2,IF(I24=0,H,)))))))))))))))))))))))

=LOOKUP(I24,{22,21,20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1,0},{"A1,A2,A3,A4,A5", B1,B2,B3,C1,C2,C3,D1,D2,D3,E1,,E2,E3,F1,F2,F3,G1,G2,H"})

Thanks for taking the time to help out,

Excelnovice.

In my regular (paper) gradebook, students are listed in numbered rows, so as I get a new student, I have to add his/her name to the bottom of the list, no matter what letter the name starts with. The electronic gradebook, however, is strictly alphabetical. So as I continue to add students, my gradebook will look like (1. Adams 2. Davis 3. Smith 4. Moore (added later) 5. Franklin (added last). Meanwhile, the computer gradebook will look like (1. Adams 2. Davis 3. Franklin 4. Moore 5. Smith)

Obviously it's easier to enter using 10-key when I can just go straight down the list, so I can't go straight from paper gradebook (number order) to electronic gradebook (alphabetical order). Instead, what I'd like to do is have one Excel workbook that mirrors the number order of names in my paper gradebook, and one workbook that mirrors the alphabetical order of names in the computer gradebook. Each row would be a student's name, and each column would be an assignment/grade.

Since I'm inputting assignment/grades continuously, I'd like to be able to (in advance), link a bunch of cells (say, 25 columns worth) in the Franklin student row from the first worksheet (row 5) to the second worksheet (row 3). Note that the cells would be empty, since I haven't input any grades yet!

Then, as I input the first assignment, I can 10-key grades from the gradebook into the number-order workbook, and it will automatically link them to the correct row(s) in the alphabetical order workbook. Then the second workbook will already have the grades in alphabetical order for transfer to the computerized gradebook.

I'm sorry if I'm not explaining this well. It's just that entering the grades will be done several days a week over the course of six weeks - so it won't really be feasible to continue to link each grade for each student as I go. I'd rather link them in bulk at the beginning, and have them automatically transfer.

Can this be done? Any help will be MUCH appreciated!

I need help on my computer class project

im calulating student test score which are number and converting them into letter grade using this formula...=IF(D7>=90,"A",IF(D7>=80,"B",IF(D7>=70,"C",IF(D7>=60,"D",IF(D7>=50,"F")))))

but on some student test score its missed meaning the student missed the test or inactive meaning the student drop the class.. i need a formulas to calculate the missed and inactive students score so for example for missed test score the answer should be "inc" for incomplete and for inactive it should be"drop"

i tried using this formula... =if(d7=missed,"inc) so if d7 test score is missed that means the total grade should be "inc" and for inactive student the test grade should be"drop"..i tried using that formula but an error message shows up like this #name?

thought I'd found exactly what I need on Chip Pearson's site which describes

precisely what I'm trying to do but when I follow the instrucions my lookup

formula results in #REF!

If I try and enter the array with Ctrl-Shft-Enter I get the "the formula you

typed contains an error " message.

I'm confused! I must be missing something really obvious. The info from

Chip Pearson's site is below. I'd be grateful for an idiot's guide on

exactly how to get this to work.

Thanks a lot

----------------

........create a define name called "Grades" which refers to the array:

={0,"F";60,"D";70,"C";80,"B";90,"A"}

Then, use VLOOKUP to convert the number to the grade:

=VLOOKUP(A1,Grades,2)

where A1 is the cell contains the numeric value.

Grade book time again. I wish to convert number marks to letter grades, have tried to use the following;

IF(A3=0,"#",IF(A3<8,"U",IF(A3<12,"G",IF(A3<16,"F",IF(A3<20,"E",IF(A3<24,"D",IF(A3<28,"C",IF(A3<32,"B ",IF(A3<36,"A",IF(A3>35,"A*"))))))))))

But it won't work because it breaks the seven nested function rule.

Any suggestions how I can keep this to one cell?

Maybe a Vlookup or similar? Just a pointer would help,

Thanks for reading,

Dave

I need help on my computer class project

im calulating student test score which are number and converting them into letter grade using this formula...=IF(D7>=90,"A",IF(D7>=80,"B",IF(D7>=70,"C",IF(D7>=60,"D",IF(D7>=50,"F")))))

but on some student test score its missed meaning the student missed the test or inactive meaning the student drop the class.. i need a formulas to calculate the missed and inactive students score so for example for missed test score the answer should be "inc" for incomplete and for inactive it should be"drop"

i tried using this formula... =if(d7=missed,"inc) so if d7 test score is missed that means the total grade should be "inc" and for inactive student the test grade should be"drop"..i tried using that formula but an error message shows up like this #name?