Chi-Square Genetics Calculator
Test if observed genetic ratios match expected Mendelian ratios using the chi-square goodness of fit test.
Input Data
Chi-Square Formula
X² = Σ [(O - E)² / E]
Chi-Square Result
0.4700
X² value
Degrees of Freedom
3
Critical Value
7.815
Statistical Decision
✓
Fail to Reject Null Hypothesis
Observed data fits expected ratios
Component Breakdown
| Category | O | E | (O-E)²/E |
|---|---|---|---|
| Round Yellow | 315 | 312.75 | 0.0162 |
| Wrinkled Yellow | 101 | 104.25 | 0.1013 |
| Round Green | 108 | 104.25 | 0.1349 |
| Wrinkled Green | 32 | 34.75 | 0.2176 |
| Total | 556 | 556.00 | 0.4700 |