Step 4: Calculate standard deviation of the returns using the STDEV function. Note: The average and standard deviation are expressed as percentages, while the variance is a decimal number.

Learn the standard deviation formula, how to calculate it, and its importance in data analysis. Step-by-step guide with examples.

Which Casio scientific calculators are best? You will probably need a Casio scientific calculator at some point in your educational journey to help you figure out formulas, equations, variables ...