Math & Statistics
Chi-Square Test Calculator
Test goodness-of-fit between observed and expected frequencies.
Your inputs
Change any value to update the result instantly.
Chi-square statistic
3
Degrees of freedom
3
P-value
0.3916
No significant difference
Formula and working
χ² = Σ((O − E)² ÷ E)
- 1
Collect the inputs
Observed 1 = 11; Expected 1 = 10; Observed 2 = 12; Expected 2 = 10; Observed 3 = 13; Expected 3 = 10; Observed 4 = 14; Expected 4 = 10
- 2
Apply the formula
χ² = Σ((O − E)² ÷ E)
- 3
Result
Chi-square statistic = 3
Frequently asked questions
Important limitation
This is an educational estimate based only on the values and formula shown. Verify current rates, rules, units, and professional standards before relying on the result. It is not personalized financial or investment advice.
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