excel confidence interval function how to determine the confidence interval in excel what is excel's confidence interval how to find confidence interval in excel what is confidence interval when standard deviation is 0 excel throws when the standard deviation is 0 in excel, excel throws a number error what value is the standard deviation in excel when i call confidence interval excel what is the standard deviation when standard deviation is zero, excel throws error does excel throws a confidence interval when standard deviation is 0 does excel use confidence interval when using confidence interval function excel why is the confidence interval in excel called #num? excel function confidence interval when standard deviation is 0 do excel returns numeric error when standard deviation is 0 excel throws error excel function to calculate confidence interval excel number error when standard deviation what is standard deviation in excel