@acer , I beg your pardon, but I am learning. So I not able to know, what other problems will come while working on my task.

@acer , thank you. I have a little problem: the first index of the table should be '0', assigned to 0.6. The table indices start with '1' .So my plot is not exactly correct. You will shurely have an advice !

@acer , it is a table like this :table([.6, 1.2, 2.0, 3.3, 4.1, 5.0, 5.5, 5.8])