(Select all that apply) In which of the following situations would you typically use a categorical array?
5 views (last 30 days)
Show older comments
Please answer the below question shown in image.
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/768571/image.png)
Accepted Answer
Lei Hou
on 17 Oct 2021
Hi Sangat,
Typically, categorical is useful when your array is large, contains duplicated values and has finite set of discrete categories. For example, a very long vector of US states. A categorical array provides efficient storage and convenient manipulation of nonnumeric data. Regarding the situations you provided, I would recommend:
- A list of text where some values in the list are repeated
- A column in a table that labels which group each row belongs to
Thanks,
Lei
3 Comments
Lei Hou
on 19 Oct 2021
Hi Sangat,
We can exclude "A distribution of numeric data" and "A list of all unique values". The description of "a fixed set of possibilities" is not very clear of what the data look like. If the data contains duplicated values and possible values are from a fixed set, then it is also a use case of categorical.
Thanks,
Lei
More Answers (2)
Arliya Marin Mathew
on 21 Oct 2021
●A list of text where some values in the list are repeated ●A fixed set of possibilities ●A column in a table that labels which group each row belongs to
See Also
Categories
Find more on Matrices and Arrays in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!