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Statistical Significance Calculator
Test whether the difference between two survey proportions is statistically significant using a two-sample z-test.
Group A
90 respondents said yes out of 200
Group B
74 respondents said yes out of 200
✗
Not Significant
at α = 0.05
p-value
0.104
z-score
1.627
Difference (p₁ − p₂)
+8.0pp
95% CI: [-1.6pp, 17.6pp]
Note: Statistical significance ≠ practical importance. A 8.0pp difference may be significant but too small to act on. Always consider effect size alongside p-values.
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