COMM 300: T-test
From BluWiki
Contents |
One tailed test
Paired sample t-test
- Two tailed test
- If the group is divided into two nominal groups (like male & female) - you need to recode the groups into 1 & 2
- Transform > Automatic Recode > Add sex > Click ok
Independent sample t-test
Other T-test notes
Errors:
- Type 1 error: Reject null when null is true
- Type 2 error: Do not reject null when null is false
