Standard Deviation Calculator
📊 Provide numbers separated by commas to calculate standard deviation, variance, mean, sum, and margin of error.
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margin of error uses 95% confidence (z=1.96)
STANDARD DEVIATION
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VARIANCE
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MEAN
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SUM
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MARGIN OF ERROR (95%)
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How the Standard Deviation Calculator Works
You can quickly analyze your dataset by following these steps:
Enter Your Data: Type or paste numbers separated by commas into the input field. The example set is pre-loaded.
Choose Data Type: Select whether your numbers represent a full Population or a Sample. This changes how variance and standard deviation are calculated.
Calculate: Click the blue Calculate button or press “Enter”. The results panel will instantly display the five key statistics. The Clear button resets all fields for a new calculation.