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# How to Calculate Deciles in Excel (With Examples)

In statistics, deciles are numbers that split a dataset into ten groups of equal frequency.

The first decile is the point where 10% of all data values lie below it. The second decile is the point where 20% of all data values lie below it, and so forth.

We can use the following function to calculate the deciles for a dataset in Excel:

```=PERCENTILE(CELL RANGE, PERCENTILE)
```

The following example shows how to use this function in practice.

### Example: Calculate Deciles in Excel

Suppose we have the following dataset with 20 values:

The following image shows how to calculate the deciles for the dataset:

The way to interpret the deciles is as follows:

• 20% of all data values lie belowÂ 67.8.
• 30% of all data values lie belowÂ 76.5.
• 40% of all data values lie belowÂ 83.6.

And so on.

To place each data value into a decile, we can use theÂ PERCENTRANK.EXC() function, which uses the following syntax:

`=PERCENTRANK.EXC(CELL RANGE, DATA VALUE, SIGNIFICANCE)`

The following image shows how to use this function for our dataset:

Note that this function finds the relative rank of a value in a dataset as a percentage and rounds to one digit, which is equivalent to finding the decile that the value falls in.

The way to interpret the output is as follows:

• The data value 58 falls between the percentile 0 and 0.1, thus it falls in the first decile.
• The data value 64 falls between the percentile 0.1 and 0.2, thus it falls in the second decile.
• The data value 67 falls between the percentile 0.1 and 0.2, thus it falls in the second decile.
• The data value 68 falls between the percentile 0.2 and 0.3, thus it falls in the third decile.

And so on.