Level 2 Inference Learning Workbook covers NCEA Level 2 Achievement Standard 91264 (Mathematics and Statistics 2.9): Use statistical methods to make an inference. This standard is internally assessed and worth 4 credits. The workbook features: bite-sized sections of notes with student-friendly explanations worked examples to illustrate fundamental concepts plenty of exercises so students can develop their skills answers to all exercises, which are provided at the end of the book a practice assessment task with fully worked solution. An index gives easy access to important terms and definitions highlighted in the text. This workbook covers the stages involved in carrying out a statistical investigation in order to make an inference about a population. This includes posing a suitable comparative question, selecting random samples, using appropriate displays and measures, discussing sample distributions, creating informal confidence intervals and using them to make an inference. A report is produced, structured using the statistical enquiry cycle, in order to describe the investigation and communicate findings and conclusions. The concise notes and write-on exercises keep student work together in a compact format, providing a useful end-of-topic revision tool. This workbook is ideal for use in the classroom or for homework, home study and revision.