Laboratory Formula

Mean Formula Formula

Calculates the average value of a set of experimental measurements.

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Formula Summary

Mean Formula

Calculates the average value of a set of experimental measurements.

Category
Laboratory
Equation
x̄ = Σx / n
Calculator
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Equation

x̄ = Σx / n

Variables

  • x̄ = mean
  • Σx = sum of values
  • n = number of values

How to Use This Formula

  1. Identify the known values from the problem statement.
  2. Convert all values into compatible units.
  3. Substitute the values into the equation and calculate the result.
  4. Check that the final answer has the correct unit and meaning.

More Laboratory Formulas

Percent Error

% error = |experimental − accepted| ÷ |accepted| × 100

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Percent Difference

% difference = |A − B| ÷ ((|A| + |B|) ÷ 2) × 100

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Arithmetic Mean

x̄ = Σx ÷ n

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Sample Standard Deviation

s = √(Σ(xᵢ − x̄)² ÷ (n − 1))

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