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Standard deviation is a measurement of market volatility. Learn how investors use standard deviation in the MoneySense Glossary.

Learn the basics of calculating and interpreting standard deviation, and how it is used to measure and determine risk in the investment industry.

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

Calculate your T-Value by taking the difference between the mean and population mean and dividing it over the standard deviation divided by the degrees of freedom square root.

Grasp risk management—find out how to annualize standard deviation and refine your investment strategies. Start stabilizing your portfolio now!

Calculating an investment's standard deviation can help you determine how much its price may rise or fall in the future. Find the formula here.

Standard Deviation: In Defense of an Often-Dismissed Investing Metric Debunking three arguments against this valuable risk-assessment tool.