REFACTORING_SUMMARY.md

Refactoring Summary - Version 0.3.1

Changes Made

Function Name Simplification

The Welch's t-test functions have been renamed for simplicity and ease of use:

Old Name	New Name	Description
welch_ttest_one_sample	one_t	One-sample Welch's t-test
welch_ttest_two_sample	two_t	Two-sample Welch's t-test

Version Update

• Previous version: 0.3.0
• New version: 0.3.1

Files Updated

1. src/quantpolars/ttest.py

   • Renamed welch_ttest_one_sample → one_t
   • Renamed welch_ttest_two_sample → two_t

2. src/quantpolars/__init__.py

   • Updated exports to use new function names
   • Bumped version to 0.3.1

3. pyproject.toml

   • Updated version to 0.3.1

4. tests/test_ttest.py

   • Updated all 27 test cases to use new function names
   • All tests pass ✅

5. demo_ttest.py

   • Updated all examples to use new function names
   • Demo runs successfully ✅

6. TTEST_DOCUMENTATION.md

   • Updated all documentation with new function names
   • Updated all code examples

Usage Examples

Before (v0.3.0)

from quantpolars import welch_ttest_one_sample, welch_ttest_two_sample

# One-sample test
result = welch_ttest_one_sample(df, column="values", mu=0)

# Two-sample test
result = welch_ttest_two_sample(df, column1="col1", column2="col2")

After (v0.3.1)

from quantpolars import one_t, two_t

# One-sample test
result = one_t(df, column="values", mu=0)

# Two-sample test
result = two_t(df, column1="col1", column2="col2")

Benefits

1. Shorter function names - Easier to type and remember
2. Cleaner code - More concise and readable
3. Consistent with package philosophy - Similar to existing sm() function
4. Backward compatibility note - This is a breaking change for v0.3.0 users

Testing Status

• ✅ All 27 unit tests pass
• ✅ Demo script runs successfully
• ✅ Documentation updated
• ✅ Package builds and installs correctly

Migration Guide

If you're upgrading from v0.3.0, simply replace:

• welch_ttest_one_sample with one_t
• welch_ttest_two_sample with two_t

All parameters and return values remain unchanged.