Updated incorrect use of 'Data science".
Updated title because section talks refers to both Data science and analysis.
Fixed some typos and phrasing inconsistencies
* Indentation and grammar
- I added a sentence about indentation, which is essential for the code to be contained in the function
- Neatened up the grammar in the list.
* Remove commas
Included info about the colon being required and no closing statement, and indentation everything that is properly indented following the definition is within the scope of the function
benpeterdalley