About VLOOKUP in Excel (Find all grades and calculate the GPA)

[ryo89589]

Hi, everyone. I found a problem in Excel. Can any better method be used to calculating two GPA (E2 and E7 in the following)?

Example:
Table A:

[TABLE="width: 500"]
<tbody>[TR]
[TD]Year[/TD]
[TD]Subject Title[/TD]
[TD]Credits[/TD]
[TD]Grade[/TD]
[TD]GPA[/TD]
[/TR]
[TR]
[TD]1[/TD]
[TD]Subject1[/TD]
[TD]1[/TD]
[TD]A+[/TD]
[TD]3.57[/TD]
[/TR]
[TR]
[TD][/TD]
[TD]Subject2[/TD]
[TD]2[/TD]
[TD]A[/TD]
[TD][/TD]
[/TR]
[TR]
[TD][/TD]
[TD]Subject3[/TD]
[TD]3[/TD]
[TD]A-[/TD]
[TD][/TD]
[/TR]
[TR]
[TD][/TD]
[TD]Subject4[/TD]
[TD]3[/TD]
[TD]B+[/TD]
[TD][/TD]
[/TR]
[TR]
[TD][/TD]
[TD]Subject5[/TD]
[TD]2[/TD]
[TD]B[/TD]
[TD][/TD]
[/TR]
[TR]
[TD]2[/TD]
[TD]Subject6[/TD]
[TD]3[/TD]
[TD]B-[/TD]
[TD]2.33[/TD]
[/TR]
[TR]
[TD][/TD]
[TD]Subject7[/TD]
[TD]3[/TD]
[TD]C+[/TD]
[TD][/TD]
[/TR]
[TR]
[TD][/TD]
[TD]Subject8[/TD]
[TD]3[/TD]
[TD]C[/TD]
[TD][/TD]
[/TR]
</tbody>[/TABLE]

Table B:

[TABLE="width: 144"]
<tbody>[TR]
[TD="class: xl69, width: 144, colspan: 2"]GPA[/TD]
[/TR]
[TR]
[TD="class: xl65"]A+[/TD]
[TD="class: xl66, align: right"]4.3[/TD]
[/TR]
[TR]
[TD="class: xl65"]A[/TD]
[TD="class: xl66, align: right"]4[/TD]
[/TR]
[TR]
[TD="class: xl65"]A-[/TD]
[TD="class: xl66, align: right"]3.7[/TD]
[/TR]
[TR]
[TD="class: xl65"]B+[/TD]
[TD="class: xl66, align: right"]3.3[/TD]
[/TR]
[TR]
[TD="class: xl65"]B[/TD]
[TD="class: xl66, align: right"]3[/TD]
[/TR]
[TR]
[TD="class: xl65"]B-[/TD]
[TD="class: xl66, align: right"]2.7[/TD]
[/TR]
[TR]
[TD="class: xl65"]C+[/TD]
[TD="class: xl66, align: right"]2.3[/TD]
[/TR]
[TR]
[TD="class: xl65"]C[/TD]
[TD="class: xl66, align: right"]2[/TD]
[/TR]
[TR]
[TD="class: xl65"]C-[/TD]
[TD="class: xl66, align: right"]1.7[/TD]
[/TR]
[TR]
[TD="class: xl65"]D+[/TD]
[TD="class: xl66, align: right"]1.3[/TD]
[/TR]
[TR]
[TD="class: xl65"]D[/TD]
[TD="class: xl66, align: right"]1[/TD]
[/TR]
[TR]
[TD="class: xl65"]D-[/TD]
[TD="class: xl66, align: right"]0.7[/TD]
[/TR]
[TR]
[TD="class: xl67"]F[/TD]
[TD="class: xl68, align: right"]0[/TD]
[/TR]
</tbody>[/TABLE]

Now, I am using following formulas in Table A:
E2=3.57=

=ROUND((C2*VLOOKUP(D2,G3:H15,2,FALSE)+C3*VLOOKUP(D3,G3:H15,2,FALSE)+C4*VLOOKUP(D4,G3:H15,2,FALSE)+C5*VLOOKUP(D5,G3:H15,2,FALSE)+C6*VLOOKUP(D6,G3:H15,2,FALSE))/SUM(C2:C6),2)

E7=2.33=

=ROUND((C7*VLOOKUP(D7,G3:H15,2,FALSE)+C8*VLOOKUP(D8,G3:H15,2,FALSE)+C9*VLOOKUP(D9,G3:H15,2,FALSE))/SUM(C7:C9),2)

Have any better method (reduce VLOOKUP) can be used? Thank you!

 

[DanteAmor]

Try this array formula:

But in column A you must fill all the cells with the year. Put the cell in E2 and the copies in E7.

<table border="1" cellspacing="0" style="font-family:Calibri,Arial; font-size:11pt; background-color:#ffffff; "> <colgroup><col style="font-weight:bold; width:30px; " /><col style="width:76.04px;" /><col style="width:115.96px;" /><col style="width:76.04px;" /><col style="width:76.04px;" /><col style="width:76.04px;" /><col style="width:76.04px;" /><col style="width:76.04px;" /><col style="width:76.04px;" /></colgroup><tr style="background-color:#cacaca; text-align:center; font-weight:bold; font-size:8pt; "><td > </td><td >A</td><td >B</td><td >C</td><td >D</td><td >E</td><td >F</td><td >G</td><td >H</td></tr><tr style="height:19px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >1</td><td style="background-color:#92d050; ">Year</td><td style="background-color:#92d050; ">Subject Title</td><td style="background-color:#92d050; ">Credits</td><td style="background-color:#92d050; ">Grade</td><td style="background-color:#92d050; ">GPA</td><td > </td><td > </td><td > </td></tr><tr style="height:19px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >2</td><td style="text-align:right; ">1</td><td >Subject1</td><td style="text-align:right; ">1</td><td >A+</td><td style="text-align:right; ">3.57</td><td > </td><td colspan="2" style="background-color:#ffc000; text-align:center; ">GPA</td></tr><tr style="height:19px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >3</td><td style="text-align:right; ">1</td><td >Subject2</td><td style="text-align:right; ">2</td><td >A</td><td > </td><td > </td><td >A+</td><td style="text-align:right; ">4.3</td></tr><tr style="height:19px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >4</td><td style="text-align:right; ">1</td><td >Subject3</td><td style="text-align:right; ">3</td><td >A-</td><td > </td><td > </td><td >A</td><td style="text-align:right; ">4</td></tr><tr style="height:19px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >5</td><td style="text-align:right; ">1</td><td >Subject4</td><td style="text-align:right; ">3</td><td >B+</td><td > </td><td > </td><td >A-</td><td style="text-align:right; ">3.7</td></tr><tr style="height:19px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >6</td><td style="text-align:right; ">1</td><td >Subject5</td><td style="text-align:right; ">2</td><td >B</td><td > </td><td > </td><td >B+</td><td style="text-align:right; ">3.3</td></tr><tr style="height:19px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >7</td><td style="text-align:right; ">2</td><td >Subject6</td><td style="text-align:right; ">3</td><td >B-</td><td style="text-align:right; ">2.33</td><td > </td><td >B</td><td style="text-align:right; ">3</td></tr><tr style="height:19px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >8</td><td style="text-align:right; ">2</td><td >Subject7</td><td style="text-align:right; ">3</td><td >C+</td><td > </td><td > </td><td >B-</td><td style="text-align:right; ">2.7</td></tr><tr style="height:19px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >9</td><td style="text-align:right; ">2</td><td >Subject8</td><td style="text-align:right; ">3</td><td >C</td><td > </td><td > </td><td >C+</td><td style="text-align:right; ">2.3</td></tr><tr style="height:19px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >10</td><td > </td><td > </td><td > </td><td > </td><td > </td><td > </td><td >C</td><td style="text-align:right; ">2</td></tr><tr style="height:19px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >11</td><td > </td><td > </td><td > </td><td > </td><td > </td><td > </td><td >C-</td><td style="text-align:right; ">1.7</td></tr><tr style="height:19px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >12</td><td > </td><td > </td><td > </td><td > </td><td > </td><td > </td><td >D+</td><td style="text-align:right; ">1.3</td></tr><tr style="height:19px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >13</td><td > </td><td > </td><td > </td><td > </td><td > </td><td > </td><td >D</td><td style="text-align:right; ">1</td></tr><tr style="height:19px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >14</td><td > </td><td > </td><td > </td><td > </td><td > </td><td > </td><td >D-</td><td style="text-align:right; ">0.7</td></tr><tr style="height:19px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >15</td><td > </td><td > </td><td > </td><td > </td><td > </td><td > </td><td >F</td><td style="text-align:right; ">0</td></tr></table><br /><table style="font-family:Arial; font-size:10pt; border-style: groove ;border-color:#00ff00;background-color:#fffcf9; color:#000000; "><tr><td ><b></b></td></tr><tr><td ><table border = "1" cellspacing="0" cellpadding="2" style="font-family:Arial; font-size:9pt;"><tr style="background-color:#cacaca; font-size:10pt;"><td >Cell</td><td >Formula</td></tr><tr><td >E2</td><td >{=ROUND(SUM(IFERROR(IF($A$2:$A$9=A2,$C$2:$C$9)*IF(ISNUMBER(SEARCH(IF($A$2:$A$9=A2,$D$2:$D$9),$G$3:$G$15)),$H$3:$H$15),0))/SUM(IF($A$2:$A$9=A2,$C$2:$C$9)),2)}</td></tr></table></td></tr></table>

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