I ran across another couple of typos in the book. The Jupyter notebook with the data is correct. Chapter 15, page 508, 2nd code block, line 12 is missing the closing bracket. Chapter 15, page 508, 2nd code block, line 11 should be b_xh rather than b_hh.
I ran across another couple of typos in the book. The Jupyter notebook with the data is correct. Chapter 15, page 508, 2nd code block, line 12 is missing the closing bracket. Chapter 15, page 508, 2nd code block, line 11 should be b_xh rather than b_hh.