6. I am creating a graph and it is displayed with options that I have not chosen. Why?
A Minitab dialog box keeps the options and values specified in the last access to that dialog box in the same session. These options and values are remembered until they are changed or the program is exited. Additionally, if you have stored your work as a Minitab project (*.MPJ), the dialog boxes will show the options they had when the project was saved.
If a graph does not have the expected appearance, enter again in the dialog box (remember that you can use [Ctrl] + [E]) and investigate dialog boxes with options that can be accessed from the main dialog box. Some option has most likely been modified in a previous analysis, and now you can set it back to its default value.