Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Contingency table summarizing the eye colours of 85 females and 82 males. Source: www.mathandstatistics.com/learn-stats/probability-and-percentage/using-contingency-tables-for-probability-and-dependence.
| black | brown | blue | green | grey | |
|---|---|---|---|---|---|
| female | 20 | 30 | 10 | 15 | 10 |
| male | 25 | 15 | 12 | 20 | 10 |
