Supplementary plot for you to explore the data of HW5 question 1
All these plot are help you to extract some information from row data. We do not expect you to plot these statistical chart by yourself. And the R code is not the main course you should learn. So you will not find any code of this note. If you are interested in the R code, you can send email to me. But for you which are interested in these techniques, I recommand you to take the course Data Management from Institute of Education, Prof. Ching-Fan Sheu.
Mean and 95% confidence interval of each group
Simple linear regression of O
Coefficient and 95% confidence interval of coefficient
Residual plot
