Welcome to the Board!
This is a variation of the Knapsack Problem. You can Google that, or check Wikipedia, but the upshot is that it's really a tricky problem. There are algorithms to do this, but it'd take more time than I have to adapt one of them to your particular problem. Excel has a tool called Solver that might work for you however. It's not installed by default though. If you don't have it on your Data tab, click File > Options > Add-ins > Go (on the bottom next to Excel Add-ins) > check the Solver box.
Now set up a new spreadsheet and set it up like this:
| A | B | C | D | E | F | G | H | I | J |
---|
Order | Volume | Shipment | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| Std. Dev. | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
9 | | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
| | | | | | | | | | |
Max Per shipment | | | | | | | | | | |
Minimum Orders | | | | | | | | | | |
<tbody>
[TD="align: center"]1[/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"]1[/TD]
[TD="align: right"]2[/TD]
[TD="align: right"]3[/TD]
[TD="align: right"]4[/TD]
[TD="align: right"][/TD]
[TD="align: center"]2[/TD]
[TD="align: right"]1[/TD]
[TD="align: right"]145[/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: right"]0[/TD]
[TD="align: center"]3[/TD]
[TD="align: right"]2[/TD]
[TD="align: right"]135[/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: center"]4[/TD]
[TD="align: right"]3[/TD]
[TD="align: right"]846[/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: center"]5[/TD]
[TD="align: right"]4[/TD]
[TD="align: right"]837[/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"]0[/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: center"]6[/TD]
[TD="align: right"]5[/TD]
[TD="align: right"]349[/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: center"]7[/TD]
[TD="align: right"]6[/TD]
[TD="align: right"]161[/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: center"]8[/TD]
[TD="align: right"]7[/TD]
[TD="align: right"]549[/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"]8[/TD]
[TD="align: right"]1595[/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: center"]10[/TD]
[TD="align: right"]9[/TD]
[TD="align: right"]1595[/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: center"]11[/TD]
[TD="align: right"]10[/TD]
[TD="align: right"]1908[/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: center"]12[/TD]
[TD="align: right"]11[/TD]
[TD="align: right"]1895[/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: center"]13[/TD]
[TD="align: right"]12[/TD]
[TD="align: right"]1991[/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: center"]14[/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: center"]15[/TD]
[TD="align: right"][/TD]
[TD="align: right"]3400[/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: center"]16[/TD]
[TD="align: right"][/TD]
[TD="align: right"]3.531176[/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
[TD="align: right"][/TD]
</tbody>
Sheet2
[TABLE="width: 85%"]
<tbody>[TR]
[TD]
Worksheet Formulas[TABLE="width: 100%"]
<tbody>[TR="bgcolor: [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=DAE7F5]#DAE7F5[/URL] "]
[TH]Cell[/TH]
[TH="align: left"]Formula[/TH]
[/TR]
[TR]
[TH="bgcolor: [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=DAE7F5]#DAE7F5[/URL] "]F2[/TH]
[TD="align: left"]=SUMIF(
$D$2:$D$13,F1,$B$2:$B$13)[/TD]
[/TR]
[TR]
[TH="bgcolor: [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=DAE7F5]#DAE7F5[/URL] "]G2[/TH]
[TD="align: left"]=SUMIF(
$D$2:$D$13,G1,$B$2:$B$13)[/TD]
[/TR]
[TR]
[TH="bgcolor: [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=DAE7F5]#DAE7F5[/URL] "]H2[/TH]
[TD="align: left"]=SUMIF(
$D$2:$D$13,H1,$B$2:$B$13)[/TD]
[/TR]
[TR]
[TH="bgcolor: [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=DAE7F5]#DAE7F5[/URL] "]I2[/TH]
[TD="align: left"]=SUMIF(
$D$2:$D$13,I1,$B$2:$B$13)[/TD]
[/TR]
[TR]
[TD="align: left"]
F5: =STDEV.P(
F2:I2)[/TD]
[/TR]
[TR]
[TH="bgcolor: [URL=https://www.mrexcel.com/forum/usertag.php?do=list&action=hash&hash=DAE7F5]#DAE7F5[/URL] "]C16[/TH]
[TD="align: left"]=SUM(
B2:B13)/C15[/TD]
[/TR]
</tbody>[/TABLE]
[/TD]
[/TR]
</tbody>[/TABLE]
The formula in C16 will tell you the minimum number of shipments you'll need (rounded up). So in F1:I1 put the numbers 1 to 4. Then put the formula in F5.
Now from the Data tab, click Solver (far right). Set up the parameters like this:
Set Objective: F5
To: Min
By Changing Variable Cells: D2:D13
Subject to the Constraints:
D2:D13<=
4
D2:D13 = integer
D2:D13 >=1
F2:I2<=C15
Solving Method: Evolutionary
and click Solve. It'll ponder for a while (you can see the stats in the status bar) and hopefully come up with a solution. If it doesn't, and it may not, don't give up hope yet. The algorithm is very dependent on starting conditions. Change D2:D13 all to 4 and try again. The numbers in column D will be the shipment that the order on that line should go in. If you still don't get a good solution after a few tries, there may not be a solution, or this algorithm might not find it. Then you might have to assume that you need 5 shipments. You'd just add a 5 in J1, the formula in J2, and update the formula in F5. Then try Solver again, changing the constraints I marked in red.
Incidentally, I chose Std. Dev. as the formula since that will have the effect of balancing the shipment sizes as much as possible. Other options are possible.
Hope this works for you!