sync intro lobjs with R

Author: trevorcampbell

source/intro.md

@@ -37,7 +37,7 @@ By the end of the chapter, readers will be able to do the following:
 - Identify the different types of data analysis question and categorize a question into the correct type.
 - Load the `pandas` package into Python.
 - Read tabular data with `read_csv`.
-- Create new variables and objects in Python.
+- Create new variables and objects in Python using the assignment symbol.
 - Create and organize subsets of tabular data using `[]`, `loc[]`, `sort_values`, and `head`.
 - Add and modify columns in tabular data using column assignment.
 - Chain multiple operations in sequence.