ttended these courses over the last 15 years, many of whom helped improve this book by suggesting changes and spotting our daft mistakes (we still own any that remain!). Teaching these courses would have been much more difficult (and a lot less fun) without the enthusiastic help of a small army of postgraduate instructors. Their skill, patience and passion for teaching R and statistics has been a constant source of inspiration over the years. Thank you all (you know who you are!).</p>
<p>Thanks also to the 