Standard Deviation of Returns Calculator - Annie Scott Realty Group
Annie Scott Realty Group
Volatility Analysis

How volatile are your returns?

Measure dispersion around average return to quantify investment risk and volatility.

Why do real estate investors use the Standard Deviation of Returns?

Because it is the primary mathematical tool used to quantify investment risk.

Standard deviation measures how far historical returns fluctuate around the mean. Lower values indicate stable performance, while higher values indicate wider uncertainty and higher risk.

Standard Deviation of Returns
Professional volatility and dispersion analysis dashboard.
Calculator · Return Volatility

Dispersion model

Add historical return periods and calculate volatility under population or sample mode.

Calculation Mode
Historical Returns
PeriodReturn
⚠ Required fields are missing.
Results · Live

Risk Dispersion Analysis

Volatility level derived from your historical return distribution.

Awaiting return data

Add at least two return periods and calculate.

Standard Deviation of Returns
0.00%
Volatility
Volatility Gauge
Mean Return
0.00%
Calculation Mode
Population
Number of Periods
0
Variance
0.0000
Mean Return
0.00%
PeriodReturnDeviationSquared
Number of Periods0
Mean Average Return0.00%
Variance0.0000
Calculation ModePopulation
Standard Deviation0.00%
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Example & Formula · Investor Education

Standard Deviation of Returns

Population-standard-deviation walkthrough using historical return series.

Formula
σ = √[ Σ(Ri - R̄)² / n ]
σ = Standard Deviation · Ri = Return each period · R̄ = Mean return · n = Number of periods
Step 1
Mean Return
8.00%
(5+7+8+9+11)/5
Step 2
Deviations
-3, -1, 0, 1, 3
Step 3
Squared Deviations
9, 1, 0, 1, 9
Step 4
Variance
4.0000
(9+1+0+1+9)/5
Step 5
Standard Deviation
2.00%
√4 = 2.00%
© Annie Scott Realty Group LLCEstimates only · not financial advice

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