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Written by bestselling author Stephen Doyle and edited by Howard Thomas, former Senior Examiner for a major awarding body. This book is endorsed by WJEC and is the only book available that precisely matches WJEC AS Mathematics Statistics (S1). Designed to support you through your Statistics course and prepare you for the exams, the book contains essential underpinning notes to enhance knowledge, support course study and ensure you perform well in the exams. Features to aid study support include: / Detailed explanations within numerous examples help you understand the thinking behind each step and consolidate learning. / Examiner pointers help you focus on what is needed for the exams / Key terms are clearly defined on each page. / Features to aid revision support include: Questions of sufficient complexity give you plenty of exam practice/ Q&A sections provide further exam-style questions to test and reinforce knowledge, skills and understanding in preparation for the exams. / Grade boost tips help refine exam technique and avoid common mistakes. / Summaries provide a visual prompt for remembering key results and technique.