QUARTILE.INC
TheQUARTILE.INC
function calculates the quartile of a dataset, which is a measure of statistical dispersion. It is commonly used to split a dataset into four equal parts, each containing 25% of the data points. The function takes in two parameters  the dataset as data
and the quartile number as quartile_number
 and returns the value of the specified quartile. Quartile numbers are specified as follows: 1 for the first quartile (25th percentile), 2 for the second quartile (50th percentile, or median), and 3 for the third quartile (75th percentile).
 How to use
QUARTILE.INC
formula?  Examples of using
QUARTILE.INC
formula QUARTILE.INC
formula not working? Similar formulas to
QUARTILE.INC
Usage
Use the QUARTILE.INC
formula with the syntax shown below, it has 2 required parameters:
 data (required):
The range or array of data points for which to calculate the quartile.  quartile_number (required):
The quartile number to calculate. Must be a number between 1 and 3.
Examples
Here are a few example use cases that explain how to use theQUARTILE.INC
formula in Google Sheets.
Calculating the median
The QUARTILE.INC
function can be used to calculate the median of a dataset by specifying the quartile number as 2.
Calculating the interquartile range
The interquartile range is a measure of statistical dispersion that is defined as the difference between the third and first quartiles. The QUARTILE.INC
function can be used to calculate both quartiles, allowing for the interquartile range to be easily determined.
Identifying outliers
Outliers are data points that fall outside of the expected range of values in a dataset. By calculating the quartiles of a dataset using the QUARTILE.INC
function, it is possible to identify potential outliers by examining data points that fall outside of the expected range.
Common Mistakes
QUARTILE.INC
not working? Here are some common mistakes people make when using the QUARTILE.INC
Google Sheets Formula:
Not providing enough data
The data
parameter must contain at least 4 values. If you provide less than 4 values, the function will return an error.
Providing nonnumeric data
The data
parameter must contain only numeric data. If you provide nonnumeric data, the function will return an error.
Related Formulas
The following functions are similar to QUARTILE.INC
or are often used with it in a formula:

AVERAGE
The AVERAGE function calculates the average (arithmetic mean) of the values passed to it. It is commonly used to find the average of a range of cells containing numerical data.

MEDIAN
The
MEDIAN
function returns the median (middle) value of a set of numbers. It is commonly used to find the middle value in a range of data points. If the number of data points is even, it returns the average of the two middle values. This function can be useful in statistical analysis and data visualization. 
STDEV.P
The
STDEV.P
function is a statistical function that calculates the standard deviation of a population based on a sample of numerical data. It is commonly used to measure the amount of variation or dispersion in a dataset. The formula assumes that the input values represent the entire population, rather than a sample. If the input values represent a sample, you should use theSTDEV.S
function instead. 
VAR.P
The
VAR.P
function returns the variance of its arguments, which is a measure of the spread of a dataset in statistics. Unlike theVAR
function,VAR.P
function considers all the values in the dataset when calculating its variance, not just a sample of them. The function is commonly used to analyze the variability of a dataset and determine how much the data points deviate from the mean.
Learn More
You can learn more about the QUARTILE.INC
Google Sheets function on Google Support.