The Chi-squared test is often used when you determine whether your data is statistically significant or not.
For example, if you plan to determine one factor(male/female) and another factor(democrats/republicans) are related, the Chi-squared test will be of your help.
| democrats | republicans | |
| male | 100人 | 80人 |
| female | 80人 | 100人 |
* This data is an arbitrary sample for statistical study, not real data.
| χ2 value | Evaluation |
|---|---|
| χ2 < 3.84 | p ≥ 0.05 |
| 3.84 ≤ χ2 < 6.64 | p < 0.05 |
| 6.64 ≤ χ2 | p < 0.01 |
Updated:
