This tool provides step by step instructions accompanied by screenshots on how to calculate the mean and standard deviation with Excel.
Source: (Siegle)
Sources
Siegle, D. (n.d.). Calculating the mean and standard deviation with excel. Retrieved from http://www.gifted.uconn.edu/siegle/research/Normal/stdexcel.htm
'Calculating the Mean and Standard Deviation with Excel' is referenced in:
Method