Pandas Groupby Count Using Size() and Count() Method #python #technology #code #pandas #chatgpt #ai

TO count distinct values for each group, we might use the count function after the group-by method. Similarly, we can also use the size function after the group-by method.

In both cases, we get the same result.

But this is not true in all scenarios, They only give the same result if the dataset doesn't have a nan value.

If the dataset contains a nan value, count only returns the number of non-nan values for each column.

whereas size returns the number of rows of a group. It counts the rows irrespective of their values.

Other search terms:
- Pandas Groupby
- group by count in pandas
- Count unique in a group using pandas
- the size of a group in pandas
- Data Analytics using pandas
- group by count and size of data

#datacleaning #datascience #datapreprocessing #technology #python #eda #dataanalytics #matplotlib #datascience #google #colab #machinelearning #ai #bard
---------------------------------------------------------------------------------------------------------------------------
Show your support by subscribing to my channel.

Thank you