Question

is it possible of data to plot on a straight line, but have no correlation between x and y variables? explain answer.. help please :D

Answer 1

no it's impossible because if the data points were all on the same line, then you have a perfect correlation of +1 or -1

+1 when the slope of the line is positive
-1 when the slope of the line is negative

Answer 2

to have correlation means you have a connection of some kind between 2 variables

to have a perfect correlation means you can determine the value of one variable given another

when you have points that lie on the line like that, you can predict y perfectly based on a given x value

Answer 3

sweet man thank u so much!

Answer 4

you're welcome

Answer 5

again u saved the day :D