Chi-square test for 2 × 2 table
Test independence for two-by-two count table without continuity correction.
Your numbers
Di chi-square statistic
Chi-square approximation fit no reliable when expected counts small. E no apply Yates correction.
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Formula
χ²=N(ad−bc)²/((a+b)(c+d)(a+c)(b+d)); df=1
Test independence for two-by-two count table without continuity correction.
Example wey show the calculation
- Count for row 1, column 1
- 10
- Count for row 1, column 2
- 20
- Count for row 2, column 1
- 30
- Count for row 2, column 2
- 40
- Di chi-square statistic
- 0.793650793651
- Di degrees of freedom
- 1
- p-value
- 0.372998483613
- Di smallest expected count
- 12
Where e fit work and limits
Chi-square approximation fit no reliable when expected counts small. E no apply Yates correction.
We check inputs for missing values and allowed ranges. Result wey pass the finite numeric range no go show. Rounding affect wetin display, while calculation use the model numeric precision.
Check your units and assumptions before you rely on result. Changing label no convert currency or physical unit.
Version of di formula: f41d8fc00392 · Example don get check: