Glass's Δ
Calculate Glass's Δ instantly with the exact formula and a worked example.
Glass's Δ
Experimental group mean
Control group mean
Control group standard deviation
Glass's Δ
0.666667
Mean difference
8
Effect size
Medium
Control share below experimental mean
74.8%
More about: Glass's Δ
What it calculates
The “Glass's Δ” calculator computes Glass's Δ from 3 parameters: experimental group mean, control group mean, control group standard deviation.
A core calculation for studying, engineering tasks, and checking solutions.
Example calculation
With parameters Experimental group mean = 78, Control group mean = 70, Control group standard deviation = 12 the result is 0.6667.
How to use
- Enter experimental group mean, control group mean and control group standard deviation — each field above is adjustable with a slider.
- Glass's Δ is calculated automatically as you type.
- Check the worked example below to see the formula applied to real numbers.
- Copy the result or bookmark this calculator.
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FAQ
How is Glass's Δ calculated?
The Glass's Δ calculator computes Glass's Δ from experimental group mean, control group mean, control group standard deviation. Enter your values above and the exact formula is applied instantly; a worked example with real numbers is shown below.
Is the Glass's Δ calculator free?
Yes. It is completely free, needs no signup, runs entirely in your browser, and sends no data to any server.
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