When reviewing cash flow data for your small business, knowing the standard deviation can help you determine if the numbers are out of whack. Calculating standard deviation manually can be ...

Using Microsoft Excel you can create charts based on the data and formulas entered in a worksheet. Enter a sample range of numbers in Excel as if you were at an event asking people their ages, for ...

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The usual process inspection scheme for controlling the standard deviation (S. D.) of a normal distribution is to plot a Shewhart chart on which are recorded the ranges of small samples; a common size ...