Overview
For this assignment, you will watch two videos and answer a few questions accordingly.
First, watch the following short video (8 minutes),
https://www.youtube.com/watch?v=lZFmFuZGQTk
and answer the following questions:
1. What are the two factors in the example from the video? How many levels for each factor?
Gender & Age
2. From the example in the video, Sum of Square total is broken down into or is divided by 4 parts. What are those four components?
3. You may also notice that Null hypotheses here have three statements. What are they?
Next, in two way anova we are interested to investigate if there are main effects as well as interaction effect.
Note: Main Effects reflect mean differences among levels of each single factor; There is also interaction effect, that is the interaction between two factors when the effect of one depends on the level of the other.
Watch the following 11 minutes videos
https://www.youtube.com/watch?v=OE46w0RqmQA
Try to answer one simple question:
4. Is there an interaction effect?