This is the sixth module in the series "Modeling Probability Distribution" in Excel. This video describes the unbounded nature of the Normal distribution that sometimes causes the values to extend beyond practical or explicit limits, for example, birth weights extend below zero. The Excel workbook demonstrates how to truncate the PDF using. The Excel workbook can be downloaded using the following lint: https://docs.google.com/spreadsheets/d/1SYY2AcQuanPI9UiCOfdtbQviYP-IEE1n/edit?usp=sharing&ouid=102871636509202761713&rtpof=true&sd=true