Probability is an excellent resource for students preparing for the NCEA 3 Achievement Standard 91585. Key features of this book are: It includes five original assessments on Probability Distributions and comprises 48 pages. It provides answers for each assessment so students can check their performance. Its layout is similar in style to the actual assessment and there is ample space for both working and answers. It clearly identifies for each assessment what is required for students to gain Achievement, Merit or Excellence.