Quickly generate random groups for list of data in Excel

Sometimes, you may want to randomly assign data to groups as screenshot 1 shown, or generate groups for a list of names as below screenshot 2 shown, but how can handle these jobs quickly? Actually, in Excel, you can use formulas to solve them easily.

Screenshot1	Screenshot2

Randomly assign data to groups

Generate random groups in a specified data size

Download sample file

If you want to randomly assign data to a specified number of groups, each group is allowed with different numbers of data, you can use the CHOOSE and RANDBETWEEN functions.

Select a blank cell next to the list you want to assign to random groups, copy or type this formula

=CHOOSE(RANDBETWEEN(1,3),"Group A","Group B","Group C ")

In the formula, (1, 3) indicates to group data into 3 groups, Group A, Group B and Group C are the texts will be displayed in formula cells which used to distinguish different groups.

Then drag fill handle down to randomly assign data into groups.

Then the list of data has been randomly assigned to groups, and each group may have different numbers of data.

The calculated results will not be fixed, they will be recalculated if there is any change to the workbook.

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If you want to generate random groups for a list of data, and each group has a specified data size, you can use the ROUNDUP and RANK functions.

1. Firstly, you need a helper column to list some random data next to your data. Supposing in cell E2, type this formula

=RAND()

Then drag fill handle down to fill this formula to cells you use.

2. In the next column, supposing in cell F2, copy or type this formula

=ROUNDUP(RANK(E2,$E$2:$E$13)/4,0)

E2:E13 is the range that contains formula =RAND(), 4 is the number of data that you want each group contains.

The drag fill handle down to generate random groups for the list of data.

Click to download sample file

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