How to Calculate Standard Deviation of Cash Flows in Excel. When reviewing cash flow data for your small business, knowing the standard deviation can help you determine if the numbers are out of ...

With that data you can then calculate the mean average and the standard deviation based on that sample of data. With that, Excel can generate a series of random numbers based on the data entered ...

Overview: What Is a Pooled Standard Deviation? The definition of the standard deviation is the average distance each data point is away from the mean of the data.

Key Points Use Excel to calculate daily returns and standard deviation to gauge stock volatility. Annualize volatility by multiplying daily standard deviation by the square root of 252.

The size of the data set—the sample size—doesn't affect standard deviation, but the sample size is a key factor in calculating the SEM.