How to Find confidence intervals without the sigma in Excel
If you use Microsoft Excel on a regular basis, odds are you work with numbers. Put those numbers to work. Statistical analysis allows you to find patterns, trends and probabilities within your data. In this MS Excel tutorial from everyone's favorite Excel guru, YouTube's ExcelsFun, the 82nd installment in his "Excel Statistics" series of free video lessons, you'll learn how to construct confidence intervals when the sigma value (the population's standard deviation) in NOT Known using the TINV function.
Busn 210 Business Statistical Using Excel Highline Community College taught by Mike Gel excelisfun Girvin