Differentiate between wide and tall data formats?

Data Science, AI and ML
#1

Differentiate between wide and tall data formats?

#2

In a wide data format, you would have a Data Set with:

  1. One Single row for EVERY data point
  2. Multiple columns to represent different attributes of a data point

For the use case of classroom, this is what a wide data set could look like:

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Wide Data Set

As you can see above, each student has a single row, with different columns showing their scores in different subjects.

Suppose you want to consolidate all the marks into a single column. For this purpose you would need a Tall Data Set, which would look like this:

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Tall Data Set