20130826

I came across some questions about mathematics; probability theory and mathematical statistics, specifically. When I went on to the Chapter Six, Sampling and Sampling Distribution, I felt it was hard to go on because there are three kinds of classical distribution models: X^2 distribution, t distribution and F distribution. The explanation of them in my book was not clear and the proofs of some theorems were not given. Only their properties were listed. I felt bored about that!!

Remember to always add a space after commas and full stops, and never before.

"..., only listing their properties" would have been appropriate if the subject of the sentence was "the book", but in the case the subject was "the explanation".

You could have said something like "The book didn't explain them clearly and didn't provide the proofs of some theorems, only listing their properties." This means exactly the same thing.

20130826

I came across some questions in mathematics, specifically in probability theory and mathematical statistics specifically.  When I went on to the chapter six, sampling and sampling distribution, I felt it's hard to proceed past this point go ahead. Because There are three kinds of classical distribution model, X^2 distribution, t distribution and F distribution,  but the explanation and interpretation of these models in my book is not clear and the proving process proofs of some theorems are not given, only listing their properties are only listed. I feel bored/frustated about by that!!