(Excel examples for Beginners)
In this end-to-end excel example, you will learn – Excel formula for Beginners – How to find Unique values by count in Excel.
Excel formula for Beginners – How to find Unique values by count in Excel
Generic formula
=UNIQUE(FILTER(data,COUNTIF(data,data)>n))
Summary
To extract a list of unique values from a set of data, filtered by count or occurence, you can use UNIQUE with FILTER, and apply criteria with the COUNTIF function. In the example shown, the formula in D5 is:
=UNIQUE(FILTER(data,COUNTIF(data,data)>1))
which outputs the 3 unique values that appear more than once in the named range “data” (B5:B16).
Note: In this example, we are extracting a unique list of values that appear more than once. In other words, we are creating a list of duplicates 🙂 The language is somewhat confusing.
Explanation
This example uses the UNIQUE function together with the FILTER function. You can see a more basic example here.
The trick in this case is to apply criteria to the FILTER function to only allow values based on count of occurence. Working from the inside out, this is done with COUNTIF and the FILTER function here:
FILTER(data,COUNTIF(data,data)>1)
The result from COUNTIF is an array of counts like this:
{3;1;3;3;2;1;1;3;1;2;3;3}
which are checked with the logical comparison > 1 to yield an array or TRUE/FALSE values:
{TRUE;FALSE;TRUE;TRUE;TRUE;FALSE;FALSE;TRUE;FALSE;TRUE;TRUE;TRUE}
Notice TRUE corresponds to values in the data that appear more than once. This array is returned to FILTER as the include argument, used to filter the data. FILTER returns another array as a result:
{"red";"green";"green";"blue";"red";"blue";"red";"green"}
This array is returned directly to the UNIQUE function as the array argument. Notice of the 12 original values, only 8 survive.
UNIQUE then removes duplicates, and returns the final array:
{"red";"green";"blue"}
If values in B5:B16 cchange, the output will update immediately.
Count > 2
The formula in F5, which lists colors appearing at least 2 times in the source data, is:
=UNIQUE(FILTER(data,COUNTIF(data,data)>2))
Dynamic source range
Because data (B5:B15) is a normal named range, it won’t resize if data is added or deleted. To use a dynamic range that will automatically resize when needed, you can use an Excel Table, or create a dynamic named range with a formula.
Disclaimer: The information and code presented within this recipe/tutorial is only for educational and coaching purposes for beginners and developers. Anyone can practice and apply the recipe/tutorial presented here, but the reader is taking full responsibility for his/her actions. The author (content curator) of this recipe (code / program) has made every effort to ensure the accuracy of the information was correct at time of publication. The author (content curator) does not assume and hereby disclaims any liability to any party for any loss, damage, or disruption caused by errors or omissions, whether such errors or omissions result from accident, negligence, or any other cause. The information presented here could also be found in public knowledge domains.
Learn by Coding: v-Tutorials on Applied Machine Learning and Data Science for Beginners
Latest end-to-end Learn by Coding Projects (Jupyter Notebooks) in Python and R:
All Notebooks in One Bundle: Data Science Recipes and Examples in Python & R.
End-to-End Python Machine Learning Recipes & Examples.
End-to-End R Machine Learning Recipes & Examples.
Applied Statistics with R for Beginners and Business Professionals
Data Science and Machine Learning Projects in Python: Tabular Data Analytics
Data Science and Machine Learning Projects in R: Tabular Data Analytics
Python Machine Learning & Data Science Recipes: Learn by Coding
R Machine Learning & Data Science Recipes: Learn by Coding
Comparing Different Machine Learning Algorithms in Python for Classification (FREE)
There are 2000+ End-to-End Python & R Notebooks are available to build Professional Portfolio as a Data Scientist and/or Machine Learning Specialist. All Notebooks are only $29.95. We would like to request you to have a look at the website for FREE the end-to-end notebooks, and then decide whether you would like to purchase or not.