I have a good background of statistics but during my researches I realized that I don't have a sound and proper knowledge of some advanced statistics topics such as:
- hypothesis tests like chi-square, f, granger (I stop at normal and t-student tests)
- special functions like Gamma, Beta and company
- ANOVA
- random variable in the framework of Ito integral
I would like to have a suggestion to buy one/two good books concerning these topics.
Statistical Inference by Casella and Berger might get you started on the first three topics.