L14 -ANOVA Flashcards
1
Q
What are the three types of T- tests?
A
Single sample, independent samples, and paired t test
2
Q
What is type 1 error?
A
Rejecting the null hypothesis when it is actually true
(false positive)
3
Q
What is an AVOVA test?
A
It allows us to investigate whether the variability is statistically significant
It measures the variation within the groups and compares it to the variation between groups
4
Q
what are the assumptions in a one way ANOVA test?
A
- Independence: each group is compared as an independent random sample
- Normality: The samples are drawn from a population that is normally distributed.
- Homogeneity: the samples come from a population that has equal variance.
5
Q
In an ANOVA test what is the Null Hypothesis
A
Ho: all the population means are equal.
6
Q
what does the Post Hoc test do?
A
after an ANOVA test is done, and there is a statistically significant difference. A Post Hoc test can be done to determine which group means significantly differ from one another.
