Complete step-by-step e-manual showing exactly how and when to create confidence intervals in Excel. This manual will make you an expert on doing both types of confidence intervals (intervals of mean and intervals of proportion) and how to set them up in Excel. This e-manual is loaded with completed problems and screenshots in Excel of nearly all major variations of confidence intervals. The instructions are clear and easy-to-follow but at the graduate level. If you are currently taking a difficult graduate-level statistics course that covers confidence intervals, you will find this manual to be an outstanding course supplement that will explain confidence intervals much more clearly than your textbook does. If you are a business manager, you will really appreciate how easily and clearly this manual will show you how you can create confidence intervals in Excel to solve difficult statistical problems on your job. This manual will make you an Excel Statistical Master of the confidence interval.