Normal probability plots - in excel

This video shows how to make normal probability plots in EXCEL.
To find the confidence interval of a sample, we must ensure that the sample is approximately normal in distribution. To do that, your normal probability plot must have linear correlation AND you must have NO outliers.
I go through two examples with this. Let me know if you have any questions.

[@rebeccaharvey6385]

can you provide a link to a table of critical values?

[@aggieneer02]

www.chegg.com/homework-help/questions-and-answers/data-table-critical-values-normal-probability-plots-c-critical-value-round-three-decimal-p-q120342614
The second table on this page is the one that I use in these examples.