Let’s look at another example using the same normal distribution defined by a mean of 3 and standard deviation of 2. In this case, the threshold corresponding to the probability of 0.84134 is equal to 5. In other words, the probability of an event occurring below 5 for this normal distribution is equal to 0.8413. 


The mean describes the center or “balancing point” of the normal distribution. The standard deviation describes the shape of the bell-shaped curve. Valid probability input to the function is within the range (0,1), excluding 0 and 1.

Dave Bruns

Hi - I’m Dave Bruns, and I run Exceljet with my wife, Lisa. Our goal is to help you work faster in Excel. We create short videos, and clear examples of formulas, functions, pivot tables, conditional formatting, and charts.