When you have the average production of three machines, it is easy to calculate the average or mean production. You just add ...

View post: Kroger expands program to help shoppers save on groceries View post: The market is not efficient, it is delusional: Wall Street ignores higher inflation, tepid consumer confidence data amid ...

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 ...

Rate of return and standard deviation are two of the most useful statistical concepts in business. These two figures will tell you whether a business project is worth the investment and trouble, given ...

In response to my article, Is the Stock Market Too Concentrated?, which relied upon standard-deviation calculations to assess investment risk, a reader wrote: “My problem [with your argument] is ...